Home / 39,712-79,420

Finding the Third Proportional to 39,712 and 79,420

Calculator

Solution

The third proportional to 39,712 and 79,420 is: 158,832.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,712 : 79,420 = 79,420 : x
  2. Step 2: Convert to fraction form
    39,712/79,420 = 79,420/x
  3. Step 3: Cross multiply
    39,712x = 79,420 × 79,420
  4. Step 4: Simplify right side
    39,712x = 6,307,536,400
  5. Step 5: Solve for x
    x = 6,307,536,400/39,712
  6. Step 6: Final answer
    x = 158,832.00

Related Problems

Find third proportional to 19,856 and 39,710
Half scale
Find third proportional to 79,424 and 158,840
Double scale
Find third proportional to 39,714 and 79,424
Similar ratio
Find third proportional to 59,568 and 119,130
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.