PIE base ‘to lift, support, weigh’, with derivatives referring to measured weights and thence to money and payment.

Other derivatives include tolerate, extol, atlas, superlative, and translate, the last two, like relative, deriving from Latin lātus ‘carried, borne’, used as the suppletive past participle of ferre ‘to bear’ (see *bher-1).

“Lātus was not the original past participle of ferre ‘to carry’; it was drafted in from tollere ‘to raise’.” (Ayto) This meaning of lātus seems to be distinct from lātus ‘broad, wide’ and latus ‘side, flank’. De Vann says that this last word has “no good available etymology”, which the Online Dictionary of Etymology quotes, but De Vann does give a similar PIE root for tollere.

[Pokorny *tel-, telə-, tlē(i)-, tlā-,  pp. 1060–1061.]