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Finding the Fourth Proportional to 87,440.40, 130,858.20 and 52,405.20

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Solution

The fourth proportional to 87,440.40, 130,858.20 and 52,405.20 is: 78,426.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,440.40 : 130,858.20 = 52,405.20 : x
  2. Step 2: Convert to fraction form
    87,440.40/130,858.20 = 52,405.20/x
  3. Step 3: Cross multiply
    87,440.40x = 130,858.20 × 52,405.20
  4. Step 4: Simplify right side
    87,440.40x = 6,857,650,142.64
  5. Step 5: Solve for x
    x = 6,857,650,142.64/87,440.40
  6. Step 6: Final answer
    x = 78,426.56

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