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Finding the Fourth Proportional to 71,679.45, 98,921.01 and 39,848.88

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Solution

The fourth proportional to 71,679.45, 98,921.01 and 39,848.88 is: 54,993.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,679.45 : 98,921.01 = 39,848.88 : x
  2. Step 2: Convert to fraction form
    71,679.45/98,921.01 = 39,848.88/x
  3. Step 3: Cross multiply
    71,679.45x = 98,921.01 × 39,848.88
  4. Step 4: Simplify right side
    71,679.45x = 3,941,891,456.97
  5. Step 5: Solve for x
    x = 3,941,891,456.97/71,679.45
  6. Step 6: Final answer
    x = 54,993.33

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