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Finding the Third Proportional to 20,064 and 31,213

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Solution

The third proportional to 20,064 and 31,213 is: 48,557.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,064 : 31,213 = 31,213 : x
  2. Step 2: Convert to fraction form
    20,064/31,213 = 31,213/x
  3. Step 3: Cross multiply
    20,064x = 31,213 × 31,213
  4. Step 4: Simplify right side
    20,064x = 974,251,369
  5. Step 5: Solve for x
    x = 974,251,369/20,064
  6. Step 6: Final answer
    x = 48,557.19

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.