Home / 72,972.06-109,216.91-66,414.71

Finding the Fourth Proportional to 72,972.06, 109,216.91 and 66,414.71

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Solution

The fourth proportional to 72,972.06, 109,216.91 and 66,414.71 is: 99,402.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,972.06 : 109,216.91 = 66,414.71 : x
  2. Step 2: Convert to fraction form
    72,972.06/109,216.91 = 66,414.71/x
  3. Step 3: Cross multiply
    72,972.06x = 109,216.91 × 66,414.71
  4. Step 4: Simplify right side
    72,972.06x = 7,253,609,024.70
  5. Step 5: Solve for x
    x = 7,253,609,024.70/72,972.06
  6. Step 6: Final answer
    x = 99,402.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.