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Finding the Third Proportional to 20,011 and 42,416

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Solution

The third proportional to 20,011 and 42,416 is: 89,906.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,011 : 42,416 = 42,416 : x
  2. Step 2: Convert to fraction form
    20,011/42,416 = 42,416/x
  3. Step 3: Cross multiply
    20,011x = 42,416 × 42,416
  4. Step 4: Simplify right side
    20,011x = 1,799,117,056
  5. Step 5: Solve for x
    x = 1,799,117,056/20,011
  6. Step 6: Final answer
    x = 89,906.40

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.