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Finding the Fourth Proportional to 66,591.78, 91,898.64 and 36,377.61

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Solution

The fourth proportional to 66,591.78, 91,898.64 and 36,377.61 is: 50,202.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,591.78 : 91,898.64 = 36,377.61 : x
  2. Step 2: Convert to fraction form
    66,591.78/91,898.64 = 36,377.61/x
  3. Step 3: Cross multiply
    66,591.78x = 91,898.64 × 36,377.61
  4. Step 4: Simplify right side
    66,591.78x = 3,343,052,404.41
  5. Step 5: Solve for x
    x = 3,343,052,404.41/66,591.78
  6. Step 6: Final answer
    x = 50,202.18

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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.