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Finding the Fourth Proportional to 66,217.62, 91,382.11 and 36,004.97

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Solution

The fourth proportional to 66,217.62, 91,382.11 and 36,004.97 is: 49,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,217.62 : 91,382.11 = 36,004.97 : x
  2. Step 2: Convert to fraction form
    66,217.62/91,382.11 = 36,004.97/x
  3. Step 3: Cross multiply
    66,217.62x = 91,382.11 × 36,004.97
  4. Step 4: Simplify right side
    66,217.62x = 3,290,210,129.09
  5. Step 5: Solve for x
    x = 3,290,210,129.09/66,217.62
  6. Step 6: Final answer
    x = 49,687.83

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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.