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Finding the Fourth Proportional to 99,404.68, 137,177.94 and 56,962.12

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Solution

The fourth proportional to 99,404.68, 137,177.94 and 56,962.12 is: 78,607.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,404.68 : 137,177.94 = 56,962.12 : x
  2. Step 2: Convert to fraction form
    99,404.68/137,177.94 = 56,962.12/x
  3. Step 3: Cross multiply
    99,404.68x = 137,177.94 × 56,962.12
  4. Step 4: Simplify right side
    99,404.68x = 7,813,946,279.63
  5. Step 5: Solve for x
    x = 7,813,946,279.63/99,404.68
  6. Step 6: Final answer
    x = 78,607.43

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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.