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Finding the Fourth Proportional to 84, 125.92 and 29.86

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Solution

The fourth proportional to 84, 125.92 and 29.86 is: 44.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84 : 125.92 = 29.86 : x
  2. Step 2: Convert to fraction form
    84/125.92 = 29.86/x
  3. Step 3: Cross multiply
    84x = 125.92 × 29.86
  4. Step 4: Simplify right side
    84x = 3,759.97
  5. Step 5: Solve for x
    x = 3,759.97/84
  6. Step 6: Final answer
    x = 44.76

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