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Finding the Fourth Proportional to 71,311.20, 98,425.98 and 47,438.88

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Solution

The fourth proportional to 71,311.20, 98,425.98 and 47,438.88 is: 65,476.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,311.20 : 98,425.98 = 47,438.88 : x
  2. Step 2: Convert to fraction form
    71,311.20/98,425.98 = 47,438.88/x
  3. Step 3: Cross multiply
    71,311.20x = 98,425.98 × 47,438.88
  4. Step 4: Simplify right side
    71,311.20x = 4,669,218,254.10
  5. Step 5: Solve for x
    x = 4,669,218,254.10/71,311.20
  6. Step 6: Final answer
    x = 65,476.65

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