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Finding the Fourth Proportional to 83,829.38, 125,744.37 and 79,624.87

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Solution

The fourth proportional to 83,829.38, 125,744.37 and 79,624.87 is: 119,437.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,829.38 : 125,744.37 = 79,624.87 : x
  2. Step 2: Convert to fraction form
    83,829.38/125,744.37 = 79,624.87/x
  3. Step 3: Cross multiply
    83,829.38x = 125,744.37 × 79,624.87
  4. Step 4: Simplify right side
    83,829.38x = 10,012,378,501.53
  5. Step 5: Solve for x
    x = 10,012,378,501.53/83,829.38
  6. Step 6: Final answer
    x = 119,437.59

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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.