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Finding the Third Proportional to 20,487 and 43,033

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Solution

The third proportional to 20,487 and 43,033 is: 90,390.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487 : 43,033 = 43,033 : x
  2. Step 2: Convert to fraction form
    20,487/43,033 = 43,033/x
  3. Step 3: Cross multiply
    20,487x = 43,033 × 43,033
  4. Step 4: Simplify right side
    20,487x = 1,851,839,089
  5. Step 5: Solve for x
    x = 1,851,839,089/20,487
  6. Step 6: Final answer
    x = 90,390.94

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.