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Finding the Fourth Proportional to 61,687.20, 85,128.24 and 33,392.88

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Solution

The fourth proportional to 61,687.20, 85,128.24 and 33,392.88 is: 46,082.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,687.20 : 85,128.24 = 33,392.88 : x
  2. Step 2: Convert to fraction form
    61,687.20/85,128.24 = 33,392.88/x
  3. Step 3: Cross multiply
    61,687.20x = 85,128.24 × 33,392.88
  4. Step 4: Simplify right side
    61,687.20x = 2,842,677,102.93
  5. Step 5: Solve for x
    x = 2,842,677,102.93/61,687.20
  6. Step 6: Final answer
    x = 46,082.12

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