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Finding the Fourth Proportional to 71.53, 107.26 and 25.89

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Solution

The fourth proportional to 71.53, 107.26 and 25.89 is: 38.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.53 : 107.26 = 25.89 : x
  2. Step 2: Convert to fraction form
    71.53/107.26 = 25.89/x
  3. Step 3: Cross multiply
    71.53x = 107.26 × 25.89
  4. Step 4: Simplify right side
    71.53x = 2,776.96
  5. Step 5: Solve for x
    x = 2,776.96/71.53
  6. Step 6: Final answer
    x = 38.82

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