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Finding the Fourth Proportional to 81,978.96, 122,972.87 and 25,823.48

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Solution

The fourth proportional to 81,978.96, 122,972.87 and 25,823.48 is: 38,736.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,978.96 : 122,972.87 = 25,823.48 : x
  2. Step 2: Convert to fraction form
    81,978.96/122,972.87 = 25,823.48/x
  3. Step 3: Cross multiply
    81,978.96x = 122,972.87 × 25,823.48
  4. Step 4: Simplify right side
    81,978.96x = 3,175,586,705.01
  5. Step 5: Solve for x
    x = 3,175,586,705.01/81,978.96
  6. Step 6: Final answer
    x = 38,736.61

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