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Finding the Fourth Proportional to 61.62, 92.83 and 57.16

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Solution

The fourth proportional to 61.62, 92.83 and 57.16 is: 86.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.62 : 92.83 = 57.16 : x
  2. Step 2: Convert to fraction form
    61.62/92.83 = 57.16/x
  3. Step 3: Cross multiply
    61.62x = 92.83 × 57.16
  4. Step 4: Simplify right side
    61.62x = 5,306.16
  5. Step 5: Solve for x
    x = 5,306.16/61.62
  6. Step 6: Final answer
    x = 86.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.