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Finding the Third Proportional to 21,686,721 and 45,609,915

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Solution

The third proportional to 21,686,721 and 45,609,915 is: 95,923,415.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,686,721 : 45,609,915 = 45,609,915 : x
  2. Step 2: Convert to fraction form
    21,686,721/45,609,915 = 45,609,915/x
  3. Step 3: Cross multiply
    21,686,721x = 45,609,915 × 45,609,915
  4. Step 4: Simplify right side
    21,686,721x = 2,080,264,346,307,225
  5. Step 5: Solve for x
    x = 2,080,264,346,307,225/21,686,721
  6. Step 6: Final answer
    x = 95,923,415.36

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.