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Finding the Fourth Proportional to 113.21, 169.80 and 41.06

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Solution

The fourth proportional to 113.21, 169.80 and 41.06 is: 61.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.21 : 169.80 = 41.06 : x
  2. Step 2: Convert to fraction form
    113.21/169.80 = 41.06/x
  3. Step 3: Cross multiply
    113.21x = 169.80 × 41.06
  4. Step 4: Simplify right side
    113.21x = 6,972.41
  5. Step 5: Solve for x
    x = 6,972.41/113.21
  6. Step 6: Final answer
    x = 61.59

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