what is the rating where the rank is 48?
CREATE TABLE table_15681686_4 (rating VARCHAR, rank__week_ VARCHAR)
SELECT rating / SHARE(18 - 49) FROM table_15681686_4 WHERE rank__week_ = "48"
### Context: CREATE TABLE table_15681686_4 (rating VARCHAR, rank__week_ VARCHAR) ### Question: what is the rating where the rank is 48? ### Answer: SELECT rating / SHARE(18 - 49) FROM table_15681686_4 WHERE rank__week_ = "48"