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Finding the Fourth Proportional to 49.59, 68.46 and 31.18

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Solution

The fourth proportional to 49.59, 68.46 and 31.18 is: 43.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.59 : 68.46 = 31.18 : x
  2. Step 2: Convert to fraction form
    49.59/68.46 = 31.18/x
  3. Step 3: Cross multiply
    49.59x = 68.46 × 31.18
  4. Step 4: Simplify right side
    49.59x = 2,134.58
  5. Step 5: Solve for x
    x = 2,134.58/49.59
  6. Step 6: Final answer
    x = 43.04

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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.