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Finding the Fourth Proportional to 73.76, 110.84 and 68.90

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Solution

The fourth proportional to 73.76, 110.84 and 68.90 is: 103.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.76 : 110.84 = 68.90 : x
  2. Step 2: Convert to fraction form
    73.76/110.84 = 68.90/x
  3. Step 3: Cross multiply
    73.76x = 110.84 × 68.90
  4. Step 4: Simplify right side
    73.76x = 7,635.98
  5. Step 5: Solve for x
    x = 7,635.98/73.76
  6. Step 6: Final answer
    x = 103.53

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