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Finding the Fourth Proportional to 73.13, 109.67 and 52.78

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Solution

The fourth proportional to 73.13, 109.67 and 52.78 is: 79.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.13 : 109.67 = 52.78 : x
  2. Step 2: Convert to fraction form
    73.13/109.67 = 52.78/x
  3. Step 3: Cross multiply
    73.13x = 109.67 × 52.78
  4. Step 4: Simplify right side
    73.13x = 5,788.38
  5. Step 5: Solve for x
    x = 5,788.38/73.13
  6. Step 6: Final answer
    x = 79.15

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