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Finding the Fourth Proportional to 76.56, 104.96 and 75.19

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Solution

The fourth proportional to 76.56, 104.96 and 75.19 is: 103.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.56 : 104.96 = 75.19 : x
  2. Step 2: Convert to fraction form
    76.56/104.96 = 75.19/x
  3. Step 3: Cross multiply
    76.56x = 104.96 × 75.19
  4. Step 4: Simplify right side
    76.56x = 7,891.57
  5. Step 5: Solve for x
    x = 7,891.57/76.56
  6. Step 6: Final answer
    x = 103.08

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