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Finding the Third Proportional to 20,113 and 31,255

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Solution

The third proportional to 20,113 and 31,255 is: 48,569.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113 : 31,255 = 31,255 : x
  2. Step 2: Convert to fraction form
    20,113/31,255 = 31,255/x
  3. Step 3: Cross multiply
    20,113x = 31,255 × 31,255
  4. Step 4: Simplify right side
    20,113x = 976,875,025
  5. Step 5: Solve for x
    x = 976,875,025/20,113
  6. Step 6: Final answer
    x = 48,569.33

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.