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Finding the Third Proportional to 60,286.78 and 128,876.91

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Solution

The third proportional to 60,286.78 and 128,876.91 is: 275,504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,286.78 : 128,876.91 = 128,876.91 : x
  2. Step 2: Convert to fraction form
    60,286.78/128,876.91 = 128,876.91/x
  3. Step 3: Cross multiply
    60,286.78x = 128,876.91 × 128,876.91
  4. Step 4: Simplify right side
    60,286.78x = 16,609,256,964.57
  5. Step 5: Solve for x
    x = 16,609,256,964.57/60,286.78
  6. Step 6: Final answer
    x = 275,504.13

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.