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Finding the Fourth Proportional to 61,377.73, 84,672.66 and 39,865.95

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Solution

The fourth proportional to 61,377.73, 84,672.66 and 39,865.95 is: 54,996.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,377.73 : 84,672.66 = 39,865.95 : x
  2. Step 2: Convert to fraction form
    61,377.73/84,672.66 = 39,865.95/x
  3. Step 3: Cross multiply
    61,377.73x = 84,672.66 × 39,865.95
  4. Step 4: Simplify right side
    61,377.73x = 3,375,556,029.93
  5. Step 5: Solve for x
    x = 3,375,556,029.93/61,377.73
  6. Step 6: Final answer
    x = 54,996.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.