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Finding the Fourth Proportional to 81.16, 112.01 and 44.33

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Solution

The fourth proportional to 81.16, 112.01 and 44.33 is: 61.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81.16 : 112.01 = 44.33 : x
  2. Step 2: Convert to fraction form
    81.16/112.01 = 44.33/x
  3. Step 3: Cross multiply
    81.16x = 112.01 × 44.33
  4. Step 4: Simplify right side
    81.16x = 4,964.75
  5. Step 5: Solve for x
    x = 4,964.75/81.16
  6. Step 6: Final answer
    x = 61.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.