Petrasuk graduated from the University of Alberta with a Bachelor of Science in engineering before being hired by the city of Maracaibo, Venezuela as the head of planning, development, and management of the city's utility system. He later returned to Canada and graduated from the University of British Columbia with a law degree in 1958.
Petrasuk's educational background includes a Bachelor of Science in engineering from the University of Alberta followed by a law degree from the University of British Columbia, both obtained before his work with Maracaibo's utility system.