Home / 99,972.26-137,962.64-56,951.11

Finding the Fourth Proportional to 99,972.26, 137,962.64 and 56,951.11

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Solution

The fourth proportional to 99,972.26, 137,962.64 and 56,951.11 is: 78,593.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,972.26 : 137,962.64 = 56,951.11 : x
  2. Step 2: Convert to fraction form
    99,972.26/137,962.64 = 56,951.11/x
  3. Step 3: Cross multiply
    99,972.26x = 137,962.64 × 56,951.11
  4. Step 4: Simplify right side
    99,972.26x = 7,857,125,949.12
  5. Step 5: Solve for x
    x = 7,857,125,949.12/99,972.26
  6. Step 6: Final answer
    x = 78,593.06

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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.