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Finding the Fourth Proportional to 79.22, 119.20 and 65.60

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Solution

The fourth proportional to 79.22, 119.20 and 65.60 is: 98.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.22 : 119.20 = 65.60 : x
  2. Step 2: Convert to fraction form
    79.22/119.20 = 65.60/x
  3. Step 3: Cross multiply
    79.22x = 119.20 × 65.60
  4. Step 4: Simplify right side
    79.22x = 7,819.52
  5. Step 5: Solve for x
    x = 7,819.52/79.22
  6. Step 6: Final answer
    x = 98.71

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