50/67.5= 74. This means that your press is roughly 75% of your bench press. When someone's press is 66% of their bench, we usually say that this is a good ratio - that they are pressing a respectable amount compared to their bench. So, you are pressing quite a bit compared to your bench. Give yourself another couple of press workouts to try and get 3 x 5 with 50 (with perfect form of course). If in the next two press workouts you do not get the desired reps, take 10% off of the press and start the progression from there. If all of your other lifts are progressing, then do not apply this strategy to them. All of this information is in Practical Programming for Strength Training 2nd edition, except for the 66% thing which was in an article Rip wrote for T-Nation over the summer about the press.