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Finding the Fourth Proportional to 57,906.20, 86,864.10 and 18,462.20

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Solution

The fourth proportional to 57,906.20, 86,864.10 and 18,462.20 is: 27,694.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,906.20 : 86,864.10 = 18,462.20 : x
  2. Step 2: Convert to fraction form
    57,906.20/86,864.10 = 18,462.20/x
  3. Step 3: Cross multiply
    57,906.20x = 86,864.10 × 18,462.20
  4. Step 4: Simplify right side
    57,906.20x = 1,603,702,387.02
  5. Step 5: Solve for x
    x = 1,603,702,387.02/57,906.20
  6. Step 6: Final answer
    x = 27,694.83

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