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Finding the Fourth Proportional to 62,718, 86,550.72 and 34,423.08

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Solution

The fourth proportional to 62,718, 86,550.72 and 34,423.08 is: 47,503.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,718 : 86,550.72 = 34,423.08 : x
  2. Step 2: Convert to fraction form
    62,718/86,550.72 = 34,423.08/x
  3. Step 3: Cross multiply
    62,718x = 86,550.72 × 34,423.08
  4. Step 4: Simplify right side
    62,718x = 2,979,342,358.62
  5. Step 5: Solve for x
    x = 2,979,342,358.62/62,718
  6. Step 6: Final answer
    x = 47,503.78

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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.