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Finding the Fourth Proportional to 92,251.71, 138,377.57 and 66,007.71

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Solution

The fourth proportional to 92,251.71, 138,377.57 and 66,007.71 is: 99,011.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,251.71 : 138,377.57 = 66,007.71 : x
  2. Step 2: Convert to fraction form
    92,251.71/138,377.57 = 66,007.71/x
  3. Step 3: Cross multiply
    92,251.71x = 138,377.57 × 66,007.71
  4. Step 4: Simplify right side
    92,251.71x = 9,133,986,181.03
  5. Step 5: Solve for x
    x = 9,133,986,181.03/92,251.71
  6. Step 6: Final answer
    x = 99,011.57

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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.