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Finding the Fourth Proportional to 79,487.61, 119,212.89 and 29,591.21

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Solution

The fourth proportional to 79,487.61, 119,212.89 and 29,591.21 is: 44,379.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,487.61 : 119,212.89 = 29,591.21 : x
  2. Step 2: Convert to fraction form
    79,487.61/119,212.89 = 29,591.21/x
  3. Step 3: Cross multiply
    79,487.61x = 119,212.89 × 29,591.21
  4. Step 4: Simplify right side
    79,487.61x = 3,527,653,066.63
  5. Step 5: Solve for x
    x = 3,527,653,066.63/79,487.61
  6. Step 6: Final answer
    x = 44,379.91

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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.