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Finding the Fourth Proportional to 68.41, 102.14 and 61.59

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Solution

The fourth proportional to 68.41, 102.14 and 61.59 is: 91.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.41 : 102.14 = 61.59 : x
  2. Step 2: Convert to fraction form
    68.41/102.14 = 61.59/x
  3. Step 3: Cross multiply
    68.41x = 102.14 × 61.59
  4. Step 4: Simplify right side
    68.41x = 6,290.80
  5. Step 5: Solve for x
    x = 6,290.80/68.41
  6. Step 6: Final answer
    x = 91.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.