Why is Lord Capulet determined to marry Juliet to Paris?

Capulet is likely happy
that such a well-qualified suitor is already asking after his young daughter.  Countis a kinsman
of Prince Escalus, and therefore his status in Verona would be high.  In this way, it is an
advantageous match forand would raise the status of her family, the Capulets, as well.  However,
none of this is made explicit.  

The only really explicitly stated reason
that Capulet wants Juliet to marry Paris is that he wants to help...