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Finding the Fourth Proportional to 113,747, 156,979.71 and 62,769.80

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Solution

The fourth proportional to 113,747, 156,979.71 and 62,769.80 is: 86,627.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,747 : 156,979.71 = 62,769.80 : x
  2. Step 2: Convert to fraction form
    113,747/156,979.71 = 62,769.80/x
  3. Step 3: Cross multiply
    113,747x = 156,979.71 × 62,769.80
  4. Step 4: Simplify right side
    113,747x = 9,853,585,000.76
  5. Step 5: Solve for x
    x = 9,853,585,000.76/113,747
  6. Step 6: Final answer
    x = 86,627.21

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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.