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Finding the Fourth Proportional to 91,712.80, 137,630.24 and 37,721.80

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Solution

The fourth proportional to 91,712.80, 137,630.24 and 37,721.80 is: 56,607.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,712.80 : 137,630.24 = 37,721.80 : x
  2. Step 2: Convert to fraction form
    91,712.80/137,630.24 = 37,721.80/x
  3. Step 3: Cross multiply
    91,712.80x = 137,630.24 × 37,721.80
  4. Step 4: Simplify right side
    91,712.80x = 5,191,660,387.23
  5. Step 5: Solve for x
    x = 5,191,660,387.23/91,712.80
  6. Step 6: Final answer
    x = 56,607.81

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