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Finding the Fourth Proportional to 87,290.11, 130,992.59 and 47,874.91

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Solution

The fourth proportional to 87,290.11, 130,992.59 and 47,874.91 is: 71,843.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,290.11 : 130,992.59 = 47,874.91 : x
  2. Step 2: Convert to fraction form
    87,290.11/130,992.59 = 47,874.91/x
  3. Step 3: Cross multiply
    87,290.11x = 130,992.59 × 47,874.91
  4. Step 4: Simplify right side
    87,290.11x = 6,271,258,456.92
  5. Step 5: Solve for x
    x = 6,271,258,456.92/87,290.11
  6. Step 6: Final answer
    x = 71,843.86

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