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Finding the Fourth Proportional to 71,814.72, 99,099.54 and 39,982.80

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Solution

The fourth proportional to 71,814.72, 99,099.54 and 39,982.80 is: 55,173.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,814.72 : 99,099.54 = 39,982.80 : x
  2. Step 2: Convert to fraction form
    71,814.72/99,099.54 = 39,982.80/x
  3. Step 3: Cross multiply
    71,814.72x = 99,099.54 × 39,982.80
  4. Step 4: Simplify right side
    71,814.72x = 3,962,277,087.91
  5. Step 5: Solve for x
    x = 3,962,277,087.91/71,814.72
  6. Step 6: Final answer
    x = 55,173.61

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