The age range between 40 and 49 years.

Referring to the decade of life from 40 to 49, often associated with mid-life transitions.

40 से 49 तक के दशक का संदर्भ

English Usage: Many people reassess their goals when they reach their forties.

Hindi Usage: जब लोग अपनी चालीस के दशक में पहुँचते हैं, तो वे अक्सर अपने लक्ष्यों का पुनर्मूल्यांकन करते हैं।