Home / 31,692-66,438

Finding the Third Proportional to 31,692 and 66,438

Calculator

Solution

The third proportional to 31,692 and 66,438 is: 139,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,692 : 66,438 = 66,438 : x
  2. Step 2: Convert to fraction form
    31,692/66,438 = 66,438/x
  3. Step 3: Cross multiply
    31,692x = 66,438 × 66,438
  4. Step 4: Simplify right side
    31,692x = 4,414,007,844
  5. Step 5: Solve for x
    x = 4,414,007,844/31,692
  6. Step 6: Final answer
    x = 139,278.30

Related Problems

Find third proportional to 15,846 and 33,219
Half scale
Find third proportional to 63,384 and 132,876
Double scale
Find third proportional to 31,694 and 66,442
Similar ratio
Find third proportional to 47,538 and 99,657
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.