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Finding the Third Proportional to 28,209 and 60,306

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Solution

The third proportional to 28,209 and 60,306 is: 128,923.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209 : 60,306 = 60,306 : x
  2. Step 2: Convert to fraction form
    28,209/60,306 = 60,306/x
  3. Step 3: Cross multiply
    28,209x = 60,306 × 60,306
  4. Step 4: Simplify right side
    28,209x = 3,636,813,636
  5. Step 5: Solve for x
    x = 3,636,813,636/28,209
  6. Step 6: Final answer
    x = 128,923.88

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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.