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Finding the Third Proportional to 28,479 and 60,621

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Solution

The third proportional to 28,479 and 60,621 is: 129,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479 : 60,621 = 60,621 : x
  2. Step 2: Convert to fraction form
    28,479/60,621 = 60,621/x
  3. Step 3: Cross multiply
    28,479x = 60,621 × 60,621
  4. Step 4: Simplify right side
    28,479x = 3,674,905,641
  5. Step 5: Solve for x
    x = 3,674,905,641/28,479
  6. Step 6: Final answer
    x = 129,039.14

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.