le voy a preguntar a

I'm going to ask

→ le
phrase Rare #45,735
I'm going to ask Used before the person being asked; the person is introduced with a, as in le voy a preguntar a ella, “I'm going to ask her.” Le refers to the person being asked and may mean him, her, or you in formal contexts.
SP: Le voy a preguntar a mi hermana.
EN: I'm going to ask my sister.

Le voy a preguntar a mi novio.

I'm going to ask my boyfriend.

— Whiplash (2014)

Le voy a preguntar a este.

I'm going to ask this one.

— मुन्ना भाई एम बी बी एस (2003)

Dame una respuesta, porque se no, le voy a preguntar a ella.

Give me an answer, because if not, I'm going to ask her.

— Relatos salvajes (2014)

Le voy a preguntar a otros nativos, a ver qué dicen.

I'm going to ask some other native speakers and see what they say.