the ordinal number corresponding to the number forty, often used to indicate position in a sequence.

चालीसवां

English Usage: She celebrated her fortieth birthday with friends and family.

Hindi Usage: उसने अपने चालीसवें जन्मदिन को दोस्तों और परिवार के साथ मनाया।

Referring to the ordinal number in a sequence after forty-eight.

चालीसवां

English Usage: She finished in forty-ninth place in the race.

Hindi Usage: उसने दौड़ में चालीसवें स्थान पर समाप्त किया।