Home / 31,628-66,739

Finding the Third Proportional to 31,628 and 66,739

Calculator

Solution

The third proportional to 31,628 and 66,739 is: 140,827.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628 : 66,739 = 66,739 : x
  2. Step 2: Convert to fraction form
    31,628/66,739 = 66,739/x
  3. Step 3: Cross multiply
    31,628x = 66,739 × 66,739
  4. Step 4: Simplify right side
    31,628x = 4,454,094,121
  5. Step 5: Solve for x
    x = 4,454,094,121/31,628
  6. Step 6: Final answer
    x = 140,827.56

Related Problems

Find third proportional to 15,814 and 33,369.50
Half scale
Find third proportional to 63,256 and 133,478
Double scale
Find third proportional to 31,630 and 66,743
Similar ratio
Find third proportional to 47,442 and 100,108.50
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.