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Finding the Fourth Proportional to 74.96, 112.46 and 54.91

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Solution

The fourth proportional to 74.96, 112.46 and 54.91 is: 82.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.96 : 112.46 = 54.91 : x
  2. Step 2: Convert to fraction form
    74.96/112.46 = 54.91/x
  3. Step 3: Cross multiply
    74.96x = 112.46 × 54.91
  4. Step 4: Simplify right side
    74.96x = 6,175.04
  5. Step 5: Solve for x
    x = 6,175.04/74.96
  6. Step 6: Final answer
    x = 82.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.