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Finding the Fourth Proportional to 68.62, 94.79 and 61.34

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Solution

The fourth proportional to 68.62, 94.79 and 61.34 is: 84.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.62 : 94.79 = 61.34 : x
  2. Step 2: Convert to fraction form
    68.62/94.79 = 61.34/x
  3. Step 3: Cross multiply
    68.62x = 94.79 × 61.34
  4. Step 4: Simplify right side
    68.62x = 5,814.42
  5. Step 5: Solve for x
    x = 5,814.42/68.62
  6. Step 6: Final answer
    x = 84.73

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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.