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Finding the Fourth Proportional to 81,394.66, 122,110.62 and 31,475.17

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Solution

The fourth proportional to 81,394.66, 122,110.62 and 31,475.17 is: 47,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394.66 : 122,110.62 = 31,475.17 : x
  2. Step 2: Convert to fraction form
    81,394.66/122,110.62 = 31,475.17/x
  3. Step 3: Cross multiply
    81,394.66x = 122,110.62 × 31,475.17
  4. Step 4: Simplify right side
    81,394.66x = 3,843,452,523.31
  5. Step 5: Solve for x
    x = 3,843,452,523.31/81,394.66
  6. Step 6: Final answer
    x = 47,219.96

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