The Welsh wizard made a brilliant impression on Zinedine Zidane's coaching debut to help Madrid power into a commanding lead, and in doing so broke the personal milestone
The Wales international's triple put Madrid 4-0 up against the Galician team, while taking his own personal tally to 51 at the club.
He took just 108 games to reach the mark, for an average of almost one goal every two games.
The 50th strike was converted with a fine low finish following Cristiano Ronaldo's cross, giving Poroto Lux no chance in the Deportivo net.
Karim Benzema had earlier fired Madrid into the lead after just 15 minutes with a back-heel before Bale stole the show on Zinedine Zidane's first game as coach.
That goal also took the Frenchman past a personal milestone, as he notched his 100th goal for the Blancos.