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Finding the Fourth Proportional to 91,775.60, 137,490.60 and 47,250.80

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Solution

The fourth proportional to 91,775.60, 137,490.60 and 47,250.80 is: 70,787.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,775.60 : 137,490.60 = 47,250.80 : x
  2. Step 2: Convert to fraction form
    91,775.60/137,490.60 = 47,250.80/x
  3. Step 3: Cross multiply
    91,775.60x = 137,490.60 × 47,250.80
  4. Step 4: Simplify right side
    91,775.60x = 6,496,540,842.48
  5. Step 5: Solve for x
    x = 6,496,540,842.48/91,775.60
  6. Step 6: Final answer
    x = 70,787.23

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