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Finding the Third Proportional to 17,621 and 36,700

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Solution

The third proportional to 17,621 and 36,700 is: 76,436.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,621 : 36,700 = 36,700 : x
  2. Step 2: Convert to fraction form
    17,621/36,700 = 36,700/x
  3. Step 3: Cross multiply
    17,621x = 36,700 × 36,700
  4. Step 4: Simplify right side
    17,621x = 1,346,890,000
  5. Step 5: Solve for x
    x = 1,346,890,000/17,621
  6. Step 6: Final answer
    x = 76,436.64

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.