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Finding the Fourth Proportional to 74,732.71, 103,072.82 and 47,877.71

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Solution

The fourth proportional to 74,732.71, 103,072.82 and 47,877.71 is: 66,033.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,732.71 : 103,072.82 = 47,877.71 : x
  2. Step 2: Convert to fraction form
    74,732.71/103,072.82 = 47,877.71/x
  3. Step 3: Cross multiply
    74,732.71x = 103,072.82 × 47,877.71
  4. Step 4: Simplify right side
    74,732.71x = 4,934,890,345.45
  5. Step 5: Solve for x
    x = 4,934,890,345.45/74,732.71
  6. Step 6: Final answer
    x = 66,033.88

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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.