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Finding the Fourth Proportional to 79, 118.52 and 30.92

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Solution

The fourth proportional to 79, 118.52 and 30.92 is: 46.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79 : 118.52 = 30.92 : x
  2. Step 2: Convert to fraction form
    79/118.52 = 30.92/x
  3. Step 3: Cross multiply
    79x = 118.52 × 30.92
  4. Step 4: Simplify right side
    79x = 3,664.64
  5. Step 5: Solve for x
    x = 3,664.64/79
  6. Step 6: Final answer
    x = 46.39

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