CREATE TABLE table_name_38 (per_capita_income VARCHAR2, median_family_income VARCHAR2)

What Per capita income has a Median family income of $50,755?
SELECT per_capita_income FROM table_name_38 WHERE median_family_income = "$50,755"
SELECT "per_capita_income" FROM "table_name_38" WHERE "$50,755" = "median_family_income"