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Finding the Third Proportional to 18,611,938 and 40,897,834

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Solution

The third proportional to 18,611,938 and 40,897,834 is: 89,868,815.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611,938 : 40,897,834 = 40,897,834 : x
  2. Step 2: Convert to fraction form
    18,611,938/40,897,834 = 40,897,834/x
  3. Step 3: Cross multiply
    18,611,938x = 40,897,834 × 40,897,834
  4. Step 4: Simplify right side
    18,611,938x = 1,672,632,825,891,556
  5. Step 5: Solve for x
    x = 1,672,632,825,891,556/18,611,938
  6. Step 6: Final answer
    x = 89,868,815.70

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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.