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Finding the Fourth Proportional to 71,784.62, 99,072.17 and 41,169.70

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Solution

The fourth proportional to 71,784.62, 99,072.17 and 41,169.70 is: 56,819.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,784.62 : 99,072.17 = 41,169.70 : x
  2. Step 2: Convert to fraction form
    71,784.62/99,072.17 = 41,169.70/x
  3. Step 3: Cross multiply
    71,784.62x = 99,072.17 × 41,169.70
  4. Step 4: Simplify right side
    71,784.62x = 4,078,771,517.25
  5. Step 5: Solve for x
    x = 4,078,771,517.25/71,784.62
  6. Step 6: Final answer
    x = 56,819.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.