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Finding the Fourth Proportional to 75.91, 104.67 and 71.05

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Solution

The fourth proportional to 75.91, 104.67 and 71.05 is: 97.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.91 : 104.67 = 71.05 : x
  2. Step 2: Convert to fraction form
    75.91/104.67 = 71.05/x
  3. Step 3: Cross multiply
    75.91x = 104.67 × 71.05
  4. Step 4: Simplify right side
    75.91x = 7,436.80
  5. Step 5: Solve for x
    x = 7,436.80/75.91
  6. Step 6: Final answer
    x = 97.97

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