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Finding the Third Proportional to 18,830,970 and 39,921,806

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Solution

The third proportional to 18,830,970 and 39,921,806 is: 84,634,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830,970 : 39,921,806 = 39,921,806 : x
  2. Step 2: Convert to fraction form
    18,830,970/39,921,806 = 39,921,806/x
  3. Step 3: Cross multiply
    18,830,970x = 39,921,806 × 39,921,806
  4. Step 4: Simplify right side
    18,830,970x = 1,593,750,594,301,636
  5. Step 5: Solve for x
    x = 1,593,750,594,301,636/18,830,970
  6. Step 6: Final answer
    x = 84,634,545.87

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.