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Finding the Fourth Proportional to 80,337.96, 120,507.97 and 30,404.65

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Solution

The fourth proportional to 80,337.96, 120,507.97 and 30,404.65 is: 45,607.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,337.96 : 120,507.97 = 30,404.65 : x
  2. Step 2: Convert to fraction form
    80,337.96/120,507.97 = 30,404.65/x
  3. Step 3: Cross multiply
    80,337.96x = 120,507.97 × 30,404.65
  4. Step 4: Simplify right side
    80,337.96x = 3,664,003,128.27
  5. Step 5: Solve for x
    x = 3,664,003,128.27/80,337.96
  6. Step 6: Final answer
    x = 45,607.37

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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.