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Finding the Fourth Proportional to 87,138.18, 130,694.92 and 27,966.20

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Solution

The fourth proportional to 87,138.18, 130,694.92 and 27,966.20 is: 41,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,138.18 : 130,694.92 = 27,966.20 : x
  2. Step 2: Convert to fraction form
    87,138.18/130,694.92 = 27,966.20/x
  3. Step 3: Cross multiply
    87,138.18x = 130,694.92 × 27,966.20
  4. Step 4: Simplify right side
    87,138.18x = 3,655,039,548.31
  5. Step 5: Solve for x
    x = 3,655,039,548.31/87,138.18
  6. Step 6: Final answer
    x = 41,945.33

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