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Finding the Third Proportional to 20,120 and 45,436

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Solution

The third proportional to 20,120 and 45,436 is: 102,605.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120 : 45,436 = 45,436 : x
  2. Step 2: Convert to fraction form
    20,120/45,436 = 45,436/x
  3. Step 3: Cross multiply
    20,120x = 45,436 × 45,436
  4. Step 4: Simplify right side
    20,120x = 2,064,430,096
  5. Step 5: Solve for x
    x = 2,064,430,096/20,120
  6. Step 6: Final answer
    x = 102,605.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.