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Finding the Third Proportional to 20,120 and 40,946

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Solution

The third proportional to 20,120 and 40,946 is: 83,328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120 : 40,946 = 40,946 : x
  2. Step 2: Convert to fraction form
    20,120/40,946 = 40,946/x
  3. Step 3: Cross multiply
    20,120x = 40,946 × 40,946
  4. Step 4: Simplify right side
    20,120x = 1,676,574,916
  5. Step 5: Solve for x
    x = 1,676,574,916/20,120
  6. Step 6: Final answer
    x = 83,328.77

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.