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Finding the Fourth Proportional to 51.28, 76.84 and 37.76

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Solution

The fourth proportional to 51.28, 76.84 and 37.76 is: 56.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.28 : 76.84 = 37.76 : x
  2. Step 2: Convert to fraction form
    51.28/76.84 = 37.76/x
  3. Step 3: Cross multiply
    51.28x = 76.84 × 37.76
  4. Step 4: Simplify right side
    51.28x = 2,901.48
  5. Step 5: Solve for x
    x = 2,901.48/51.28
  6. Step 6: Final answer
    x = 56.58

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