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Finding the Fourth Proportional to 95.13, 142.78 and 54.58

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Solution

The fourth proportional to 95.13, 142.78 and 54.58 is: 81.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.13 : 142.78 = 54.58 : x
  2. Step 2: Convert to fraction form
    95.13/142.78 = 54.58/x
  3. Step 3: Cross multiply
    95.13x = 142.78 × 54.58
  4. Step 4: Simplify right side
    95.13x = 7,792.93
  5. Step 5: Solve for x
    x = 7,792.93/95.13
  6. Step 6: Final answer
    x = 81.92

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