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Finding the Fourth Proportional to 61.83, 92.39 and 48.96

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Solution

The fourth proportional to 61.83, 92.39 and 48.96 is: 73.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.83 : 92.39 = 48.96 : x
  2. Step 2: Convert to fraction form
    61.83/92.39 = 48.96/x
  3. Step 3: Cross multiply
    61.83x = 92.39 × 48.96
  4. Step 4: Simplify right side
    61.83x = 4,523.17
  5. Step 5: Solve for x
    x = 4,523.17/61.83
  6. Step 6: Final answer
    x = 73.15

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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.