Home / 31,872-68,436

Finding the Third Proportional to 31,872 and 68,436

Calculator

Solution

The third proportional to 31,872 and 68,436 is: 146,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,872 : 68,436 = 68,436 : x
  2. Step 2: Convert to fraction form
    31,872/68,436 = 68,436/x
  3. Step 3: Cross multiply
    31,872x = 68,436 × 68,436
  4. Step 4: Simplify right side
    31,872x = 4,683,486,096
  5. Step 5: Solve for x
    x = 4,683,486,096/31,872
  6. Step 6: Final answer
    x = 146,946.73

Related Problems

Find third proportional to 15,936 and 34,218
Half scale
Find third proportional to 63,744 and 136,872
Double scale
Find third proportional to 31,874 and 68,440
Similar ratio
Find third proportional to 47,808 and 102,654
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.