Home / 31,536-68,724

Finding the Third Proportional to 31,536 and 68,724

Calculator

Solution

The third proportional to 31,536 and 68,724 is: 149,764.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,536 : 68,724 = 68,724 : x
  2. Step 2: Convert to fraction form
    31,536/68,724 = 68,724/x
  3. Step 3: Cross multiply
    31,536x = 68,724 × 68,724
  4. Step 4: Simplify right side
    31,536x = 4,722,988,176
  5. Step 5: Solve for x
    x = 4,722,988,176/31,536
  6. Step 6: Final answer
    x = 149,764.97

Related Problems

Find third proportional to 15,768 and 34,362
Half scale
Find third proportional to 63,072 and 137,448
Double scale
Find third proportional to 31,538 and 68,728
Similar ratio
Find third proportional to 47,304 and 103,086
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.