Home / 31,440-66,372

Finding the Third Proportional to 31,440 and 66,372

Calculator

Solution

The third proportional to 31,440 and 66,372 is: 140,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,440 : 66,372 = 66,372 : x
  2. Step 2: Convert to fraction form
    31,440/66,372 = 66,372/x
  3. Step 3: Cross multiply
    31,440x = 66,372 × 66,372
  4. Step 4: Simplify right side
    31,440x = 4,405,242,384
  5. Step 5: Solve for x
    x = 4,405,242,384/31,440
  6. Step 6: Final answer
    x = 140,115.85

Related Problems

Find third proportional to 15,720 and 33,186
Half scale
Find third proportional to 62,880 and 132,744
Double scale
Find third proportional to 31,442 and 66,376
Similar ratio
Find third proportional to 47,160 and 99,558
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.