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Finding the Third Proportional to 18,830,972 and 39,921,810

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Solution

The third proportional to 18,830,972 and 39,921,810 is: 84,634,553.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830,972 : 39,921,810 = 39,921,810 : x
  2. Step 2: Convert to fraction form
    18,830,972/39,921,810 = 39,921,810/x
  3. Step 3: Cross multiply
    18,830,972x = 39,921,810 × 39,921,810
  4. Step 4: Simplify right side
    18,830,972x = 1,593,750,913,676,100
  5. Step 5: Solve for x
    x = 1,593,750,913,676,100/18,830,972
  6. Step 6: Final answer
    x = 84,634,553.84

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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.