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Finding the Fourth Proportional to 86.04, 129.05 and 25.17

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Solution

The fourth proportional to 86.04, 129.05 and 25.17 is: 37.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86.04 : 129.05 = 25.17 : x
  2. Step 2: Convert to fraction form
    86.04/129.05 = 25.17/x
  3. Step 3: Cross multiply
    86.04x = 129.05 × 25.17
  4. Step 4: Simplify right side
    86.04x = 3,248.19
  5. Step 5: Solve for x
    x = 3,248.19/86.04
  6. Step 6: Final answer
    x = 37.75

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