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Finding the Third Proportional to 18,611,928 and 40,897,809

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Solution

The third proportional to 18,611,928 and 40,897,809 is: 89,868,754.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611,928 : 40,897,809 = 40,897,809 : x
  2. Step 2: Convert to fraction form
    18,611,928/40,897,809 = 40,897,809/x
  3. Step 3: Cross multiply
    18,611,928x = 40,897,809 × 40,897,809
  4. Step 4: Simplify right side
    18,611,928x = 1,672,630,781,000,481
  5. Step 5: Solve for x
    x = 1,672,630,781,000,481/18,611,928
  6. Step 6: Final answer
    x = 89,868,754.11

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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.