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Finding the Fourth Proportional to 85,129.75, 127,703.85 and 31,847.14

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Solution

The fourth proportional to 85,129.75, 127,703.85 and 31,847.14 is: 47,774.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,129.75 : 127,703.85 = 31,847.14 : x
  2. Step 2: Convert to fraction form
    85,129.75/127,703.85 = 31,847.14/x
  3. Step 3: Cross multiply
    85,129.75x = 127,703.85 × 31,847.14
  4. Step 4: Simplify right side
    85,129.75x = 4,067,002,389.49
  5. Step 5: Solve for x
    x = 4,067,002,389.49/85,129.75
  6. Step 6: Final answer
    x = 47,774.16

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