its just 9
9
The total of nine states had to approve the Constitution to make it "the law of the land."
In order for a change to be made in the constitution, 3/4 of the states must approve. There are 50 states, 3/4 of these would come to 37 states needing to approve.
9 states are needed to ratify the constitution
73
3/4 must approve so for now about 38 states
Article VII of the US Constitution required 9 states to ratify the Constitution for it to be effective.
3/4 of the states need to approve an ammendment.
Two thirds of the states must approve a change to the Constitution before it can go into effect. Since there are currently 50 states, 34 of them must approve any amendment.
38
at least 9 states had to agree