I do not own any 50 inch HD televisions, however I am considering buying a Sony Bravia HD television of that size or a Samsung LED television (greater than 50").
NO, There are 12 inches to a foot, so the answer would be four feet two inches. Fifty divided by 12 is four with a remainder of two. When you divide, it would be 4.16666... You should round, but it...
HD televisions can come as big as seventy in. You would need a really large room to watch that in.You can get them in fifty two inch sets also .The fifty two inch is very popular.
Panasonic produces a few 50" HDTV, including models in their Viera line. These TVs can be found at many major electronics retailers, both online and brick-and-mortar.