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Finding the Fourth Proportional to 85,640.04, 128,471.00 and 33,064.56

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Solution

The fourth proportional to 85,640.04, 128,471.00 and 33,064.56 is: 49,601.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,640.04 : 128,471.00 = 33,064.56 : x
  2. Step 2: Convert to fraction form
    85,640.04/128,471.00 = 33,064.56/x
  3. Step 3: Cross multiply
    85,640.04x = 128,471.00 × 33,064.56
  4. Step 4: Simplify right side
    85,640.04x = 4,247,836,922.44
  5. Step 5: Solve for x
    x = 4,247,836,922.44/85,640.04
  6. Step 6: Final answer
    x = 49,601.06

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