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Finding the Fourth Proportional to 87,807.14, 121,173.85 and 47,520.90

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Solution

The fourth proportional to 87,807.14, 121,173.85 and 47,520.90 is: 65,578.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,807.14 : 121,173.85 = 47,520.90 : x
  2. Step 2: Convert to fraction form
    87,807.14/121,173.85 = 47,520.90/x
  3. Step 3: Cross multiply
    87,807.14x = 121,173.85 × 47,520.90
  4. Step 4: Simplify right side
    87,807.14x = 5,758,290,408.47
  5. Step 5: Solve for x
    x = 5,758,290,408.47/87,807.14
  6. Step 6: Final answer
    x = 65,578.84

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