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Finding the Fourth Proportional to 79,882.97, 119,619.45 and 77,517.90

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Solution

The fourth proportional to 79,882.97, 119,619.45 and 77,517.90 is: 116,077.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,882.97 : 119,619.45 = 77,517.90 : x
  2. Step 2: Convert to fraction form
    79,882.97/119,619.45 = 77,517.90/x
  3. Step 3: Cross multiply
    79,882.97x = 119,619.45 × 77,517.90
  4. Step 4: Simplify right side
    79,882.97x = 9,272,648,563.16
  5. Step 5: Solve for x
    x = 9,272,648,563.16/79,882.97
  6. Step 6: Final answer
    x = 116,077.92

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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.