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Finding the Fourth Proportional to 76,978, 115,470.36 and 24,391.36

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Solution

The fourth proportional to 76,978, 115,470.36 and 24,391.36 is: 36,588.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,978 : 115,470.36 = 24,391.36 : x
  2. Step 2: Convert to fraction form
    76,978/115,470.36 = 24,391.36/x
  3. Step 3: Cross multiply
    76,978x = 115,470.36 × 24,391.36
  4. Step 4: Simplify right side
    76,978x = 2,816,479,120.09
  5. Step 5: Solve for x
    x = 2,816,479,120.09/76,978
  6. Step 6: Final answer
    x = 36,588.10

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