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Finding the Fourth Proportional to 89,129.75, 133,691.90 and 36,499.59

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Solution

The fourth proportional to 89,129.75, 133,691.90 and 36,499.59 is: 54,748.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,129.75 : 133,691.90 = 36,499.59 : x
  2. Step 2: Convert to fraction form
    89,129.75/133,691.90 = 36,499.59/x
  3. Step 3: Cross multiply
    89,129.75x = 133,691.90 × 36,499.59
  4. Step 4: Simplify right side
    89,129.75x = 4,879,699,353.82
  5. Step 5: Solve for x
    x = 4,879,699,353.82/89,129.75
  6. Step 6: Final answer
    x = 54,748.27

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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.