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Finding the Third Proportional to 20,833 and 45,220

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Solution

The third proportional to 20,833 and 45,220 is: 98,154.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833 : 45,220 = 45,220 : x
  2. Step 2: Convert to fraction form
    20,833/45,220 = 45,220/x
  3. Step 3: Cross multiply
    20,833x = 45,220 × 45,220
  4. Step 4: Simplify right side
    20,833x = 2,044,848,400
  5. Step 5: Solve for x
    x = 2,044,848,400/20,833
  6. Step 6: Final answer
    x = 98,154.29

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.