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Finding the Fourth Proportional to 93,691, 140,555.94 and 38,287

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Solution

The fourth proportional to 93,691, 140,555.94 and 38,287 is: 57,438.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,691 : 140,555.94 = 38,287 : x
  2. Step 2: Convert to fraction form
    93,691/140,555.94 = 38,287/x
  3. Step 3: Cross multiply
    93,691x = 140,555.94 × 38,287
  4. Step 4: Simplify right side
    93,691x = 5,381,465,274.78
  5. Step 5: Solve for x
    x = 5,381,465,274.78/93,691
  6. Step 6: Final answer
    x = 57,438.44

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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.