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Finding the Fourth Proportional to 66,565.64, 91,859.86 and 36,350.88

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Solution

The fourth proportional to 66,565.64, 91,859.86 and 36,350.88 is: 50,163.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,565.64 : 91,859.86 = 36,350.88 : x
  2. Step 2: Convert to fraction form
    66,565.64/91,859.86 = 36,350.88/x
  3. Step 3: Cross multiply
    66,565.64x = 91,859.86 × 36,350.88
  4. Step 4: Simplify right side
    66,565.64x = 3,339,186,747.68
  5. Step 5: Solve for x
    x = 3,339,186,747.68/66,565.64
  6. Step 6: Final answer
    x = 50,163.82

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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.