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Finding the Fourth Proportional to 57,787.26, 79,702.20 and 39,912.18

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Solution

The fourth proportional to 57,787.26, 79,702.20 and 39,912.18 is: 55,048.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,787.26 : 79,702.20 = 39,912.18 : x
  2. Step 2: Convert to fraction form
    57,787.26/79,702.20 = 39,912.18/x
  3. Step 3: Cross multiply
    57,787.26x = 79,702.20 × 39,912.18
  4. Step 4: Simplify right side
    57,787.26x = 3,181,088,552.80
  5. Step 5: Solve for x
    x = 3,181,088,552.80/57,787.26
  6. Step 6: Final answer
    x = 55,048.27

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