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Finding the Fourth Proportional to 82,978.16, 124,306.86 and 51,295.28

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Solution

The fourth proportional to 82,978.16, 124,306.86 and 51,295.28 is: 76,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,978.16 : 124,306.86 = 51,295.28 : x
  2. Step 2: Convert to fraction form
    82,978.16/124,306.86 = 51,295.28/x
  3. Step 3: Cross multiply
    82,978.16x = 124,306.86 × 51,295.28
  4. Step 4: Simplify right side
    82,978.16x = 6,376,355,189.62
  5. Step 5: Solve for x
    x = 6,376,355,189.62/82,978.16
  6. Step 6: Final answer
    x = 76,843.78

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