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Finding the Fourth Proportional to 51.91, 77.83 and 27.88

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Solution

The fourth proportional to 51.91, 77.83 and 27.88 is: 41.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.91 : 77.83 = 27.88 : x
  2. Step 2: Convert to fraction form
    51.91/77.83 = 27.88/x
  3. Step 3: Cross multiply
    51.91x = 77.83 × 27.88
  4. Step 4: Simplify right side
    51.91x = 2,169.64
  5. Step 5: Solve for x
    x = 2,169.64/51.91
  6. Step 6: Final answer
    x = 41.80

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