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Finding the Fourth Proportional to 82,599,562.80, 123,899,344.20 and 79,464,279.60

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Solution

The fourth proportional to 82,599,562.80, 123,899,344.20 and 79,464,279.60 is: 119,196,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,599,562.80 : 123,899,344.20 = 79,464,279.60 : x
  2. Step 2: Convert to fraction form
    82,599,562.80/123,899,344.20 = 79,464,279.60/x
  3. Step 3: Cross multiply
    82,599,562.80x = 123,899,344.20 × 79,464,279.60
  4. Step 4: Simplify right side
    82,599,562.80x = 9,845,572,129,765,438
  5. Step 5: Solve for x
    x = 9,845,572,129,765,438/82,599,562.80
  6. Step 6: Final answer
    x = 119,196,419.40

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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.