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Finding the Third Proportional to 28,516 and 62,621

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Solution

The third proportional to 28,516 and 62,621 is: 137,515.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516 : 62,621 = 62,621 : x
  2. Step 2: Convert to fraction form
    28,516/62,621 = 62,621/x
  3. Step 3: Cross multiply
    28,516x = 62,621 × 62,621
  4. Step 4: Simplify right side
    28,516x = 3,921,389,641
  5. Step 5: Solve for x
    x = 3,921,389,641/28,516
  6. Step 6: Final answer
    x = 137,515.42

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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.