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Finding the Third Proportional to 28,490 and 62,698

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Solution

The third proportional to 28,490 and 62,698 is: 137,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490 : 62,698 = 62,698 : x
  2. Step 2: Convert to fraction form
    28,490/62,698 = 62,698/x
  3. Step 3: Cross multiply
    28,490x = 62,698 × 62,698
  4. Step 4: Simplify right side
    28,490x = 3,931,039,204
  5. Step 5: Solve for x
    x = 3,931,039,204/28,490
  6. Step 6: Final answer
    x = 137,979.61

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.