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Finding the Fourth Proportional to 99,642.48, 137,505.72 and 54,930.48

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Solution

The fourth proportional to 99,642.48, 137,505.72 and 54,930.48 is: 75,803.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,642.48 : 137,505.72 = 54,930.48 : x
  2. Step 2: Convert to fraction form
    99,642.48/137,505.72 = 54,930.48/x
  3. Step 3: Cross multiply
    99,642.48x = 137,505.72 × 54,930.48
  4. Step 4: Simplify right side
    99,642.48x = 7,553,255,202.35
  5. Step 5: Solve for x
    x = 7,553,255,202.35/99,642.48
  6. Step 6: Final answer
    x = 75,803.56

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