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Finding the Fourth Proportional to 91,331, 137,037.54 and 58,042.44

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Solution

The fourth proportional to 91,331, 137,037.54 and 58,042.44 is: 87,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,331 : 137,037.54 = 58,042.44 : x
  2. Step 2: Convert to fraction form
    91,331/137,037.54 = 58,042.44/x
  3. Step 3: Cross multiply
    91,331x = 137,037.54 × 58,042.44
  4. Step 4: Simplify right side
    91,331x = 7,953,993,193.20
  5. Step 5: Solve for x
    x = 7,953,993,193.20/91,331
  6. Step 6: Final answer
    x = 87,089.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.