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Finding the Fourth Proportional to 84,978, 127,474.29 and 40,640.22

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Solution

The fourth proportional to 84,978, 127,474.29 and 40,640.22 is: 60,963.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,978 : 127,474.29 = 40,640.22 : x
  2. Step 2: Convert to fraction form
    84,978/127,474.29 = 40,640.22/x
  3. Step 3: Cross multiply
    84,978x = 127,474.29 × 40,640.22
  4. Step 4: Simplify right side
    84,978x = 5,180,583,189.94
  5. Step 5: Solve for x
    x = 5,180,583,189.94/84,978
  6. Step 6: Final answer
    x = 60,963.82

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Why These Related Problems?

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