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Finding the Third Proportional to 18,346 and 40,209

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Solution

The third proportional to 18,346 and 40,209 is: 88,126.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346 : 40,209 = 40,209 : x
  2. Step 2: Convert to fraction form
    18,346/40,209 = 40,209/x
  3. Step 3: Cross multiply
    18,346x = 40,209 × 40,209
  4. Step 4: Simplify right side
    18,346x = 1,616,763,681
  5. Step 5: Solve for x
    x = 1,616,763,681/18,346
  6. Step 6: Final answer
    x = 88,126.22

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.