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Finding the Fourth Proportional to 113,377.78, 156,461.79 and 62,390.71

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Solution

The fourth proportional to 113,377.78, 156,461.79 and 62,390.71 is: 86,099.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,377.78 : 156,461.79 = 62,390.71 : x
  2. Step 2: Convert to fraction form
    113,377.78/156,461.79 = 62,390.71/x
  3. Step 3: Cross multiply
    113,377.78x = 156,461.79 × 62,390.71
  4. Step 4: Simplify right side
    113,377.78x = 9,761,762,165.97
  5. Step 5: Solve for x
    x = 9,761,762,165.97/113,377.78
  6. Step 6: Final answer
    x = 86,099.43

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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.