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Finding the Third Proportional to 18,611,921 and 40,897,797

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Solution

The third proportional to 18,611,921 and 40,897,797 is: 89,868,735.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611,921 : 40,897,797 = 40,897,797 : x
  2. Step 2: Convert to fraction form
    18,611,921/40,897,797 = 40,897,797/x
  3. Step 3: Cross multiply
    18,611,921x = 40,897,797 × 40,897,797
  4. Step 4: Simplify right side
    18,611,921x = 1,672,629,799,453,209
  5. Step 5: Solve for x
    x = 1,672,629,799,453,209/18,611,921
  6. Step 6: Final answer
    x = 89,868,735.18

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.