Home / 31,356-68,472

Finding the Third Proportional to 31,356 and 68,472

Calculator

Solution

The third proportional to 31,356 and 68,472 is: 149,522.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,356 : 68,472 = 68,472 : x
  2. Step 2: Convert to fraction form
    31,356/68,472 = 68,472/x
  3. Step 3: Cross multiply
    31,356x = 68,472 × 68,472
  4. Step 4: Simplify right side
    31,356x = 4,688,414,784
  5. Step 5: Solve for x
    x = 4,688,414,784/31,356
  6. Step 6: Final answer
    x = 149,522.09

Related Problems

Find third proportional to 15,678 and 34,236
Half scale
Find third proportional to 62,712 and 136,944
Double scale
Find third proportional to 31,358 and 68,476
Similar ratio
Find third proportional to 47,034 and 102,708
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.