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Finding the Fourth Proportional to 66,565.76, 91,861.08 and 36,351.68

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Solution

The fourth proportional to 66,565.76, 91,861.08 and 36,351.68 is: 50,165.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,565.76 : 91,861.08 = 36,351.68 : x
  2. Step 2: Convert to fraction form
    66,565.76/91,861.08 = 36,351.68/x
  3. Step 3: Cross multiply
    66,565.76x = 91,861.08 × 36,351.68
  4. Step 4: Simplify right side
    66,565.76x = 3,339,304,584.61
  5. Step 5: Solve for x
    x = 3,339,304,584.61/66,565.76
  6. Step 6: Final answer
    x = 50,165.50

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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.