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Finding the Fourth Proportional to 40.75, 61.05 and 17.88

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Solution

The fourth proportional to 40.75, 61.05 and 17.88 is: 26.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.75 : 61.05 = 17.88 : x
  2. Step 2: Convert to fraction form
    40.75/61.05 = 17.88/x
  3. Step 3: Cross multiply
    40.75x = 61.05 × 17.88
  4. Step 4: Simplify right side
    40.75x = 1,091.84
  5. Step 5: Solve for x
    x = 1,091.84/40.75
  6. Step 6: Final answer
    x = 26.79

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