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Finding the Third Proportional to 7,242,920 and 15,661,906

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Solution

The third proportional to 7,242,920 and 15,661,906 is: 33,866,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242,920 : 15,661,906 = 15,661,906 : x
  2. Step 2: Convert to fraction form
    7,242,920/15,661,906 = 15,661,906/x
  3. Step 3: Cross multiply
    7,242,920x = 15,661,906 × 15,661,906
  4. Step 4: Simplify right side
    7,242,920x = 245,295,299,552,836
  5. Step 5: Solve for x
    x = 245,295,299,552,836/7,242,920
  6. Step 6: Final answer
    x = 33,866,907.21

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.