Home / 71,724.24-98,981.76-39,892.32

Finding the Fourth Proportional to 71,724.24, 98,981.76 and 39,892.32

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Solution

The fourth proportional to 71,724.24, 98,981.76 and 39,892.32 is: 55,052.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,724.24 : 98,981.76 = 39,892.32 : x
  2. Step 2: Convert to fraction form
    71,724.24/98,981.76 = 39,892.32/x
  3. Step 3: Cross multiply
    71,724.24x = 98,981.76 × 39,892.32
  4. Step 4: Simplify right side
    71,724.24x = 3,948,612,044.08
  5. Step 5: Solve for x
    x = 3,948,612,044.08/71,724.24
  6. Step 6: Final answer
    x = 55,052.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.