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Finding the Fourth Proportional to 81.88, 122.73 and 59.08

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Solution

The fourth proportional to 81.88, 122.73 and 59.08 is: 88.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81.88 : 122.73 = 59.08 : x
  2. Step 2: Convert to fraction form
    81.88/122.73 = 59.08/x
  3. Step 3: Cross multiply
    81.88x = 122.73 × 59.08
  4. Step 4: Simplify right side
    81.88x = 7,250.89
  5. Step 5: Solve for x
    x = 7,250.89/81.88
  6. Step 6: Final answer
    x = 88.56

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