If I remember well the Finland bnp per head is $44k. So $75k is close to the standard income for a couple ($88k) and probably even higher as the $88k would be much lower once you've paid taxes.
So if you are right the average person in Finland is not really living in.... Ehm don't know the English word. Like the opposite of poverty.
(Sorry don't have time to look it up on my mobile and couldn't find it instantly)
You could mean rich or well-off? I think things are bad here. People have taken alot of loans to look like they are some kind of middle-class. Thoses taxes you are going to pay for your income are 20-30% atleast. One thig that also makes living hard is a fact that finland is very loosely populated, which means that there are not realy a big centers, and therefore it is hard to get alot of buyers from one area. Also things are very regulated. As far as I have understood, middle-class has been thinning for some time already.