No buddy they are totally opposite directions like north and south . Page rank has no concern with adsense earnings .
if you have higher pagerank, that means you are getting more traffic than lower pagerank. More traffic means more money, right?
In terms of that, that is correct. But just because someone is PR5 vs. someone being PR1, doesn't mean PR5 will be making more money. There are other factors that affect your adsense earnings.
Off course higher page rank blogs are getting more traffic...but in the mean time , if you are a blogger ,you can publish your articles in social site and get good traffic