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Finding the Fourth Proportional to 84.62, 127.41 and 61.94

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Solution

The fourth proportional to 84.62, 127.41 and 61.94 is: 93.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.62 : 127.41 = 61.94 : x
  2. Step 2: Convert to fraction form
    84.62/127.41 = 61.94/x
  3. Step 3: Cross multiply
    84.62x = 127.41 × 61.94
  4. Step 4: Simplify right side
    84.62x = 7,891.14
  5. Step 5: Solve for x
    x = 7,891.14/84.62
  6. Step 6: Final answer
    x = 93.26

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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.