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Finding the Fourth Proportional to 69.59, 104.19 and 64.53

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Solution

The fourth proportional to 69.59, 104.19 and 64.53 is: 96.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.59 : 104.19 = 64.53 : x
  2. Step 2: Convert to fraction form
    69.59/104.19 = 64.53/x
  3. Step 3: Cross multiply
    69.59x = 104.19 × 64.53
  4. Step 4: Simplify right side
    69.59x = 6,723.14
  5. Step 5: Solve for x
    x = 6,723.14/69.59
  6. Step 6: Final answer
    x = 96.61

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