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Finding the Third Proportional to 28,905.50 and 63,103

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Solution

The third proportional to 28,905.50 and 63,103 is: 137,758.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.50 : 63,103 = 63,103 : x
  2. Step 2: Convert to fraction form
    28,905.50/63,103 = 63,103/x
  3. Step 3: Cross multiply
    28,905.50x = 63,103 × 63,103
  4. Step 4: Simplify right side
    28,905.50x = 3,981,988,609
  5. Step 5: Solve for x
    x = 3,981,988,609/28,905.50
  6. Step 6: Final answer
    x = 137,758.86

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.