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Finding the Third Proportional to 20,085 and 29,205

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Solution

The third proportional to 20,085 and 29,205 is: 42,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085 : 29,205 = 29,205 : x
  2. Step 2: Convert to fraction form
    20,085/29,205 = 29,205/x
  3. Step 3: Cross multiply
    20,085x = 29,205 × 29,205
  4. Step 4: Simplify right side
    20,085x = 852,932,025
  5. Step 5: Solve for x
    x = 852,932,025/20,085
  6. Step 6: Final answer
    x = 42,466.12

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.