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Finding the Third Proportional to 21,221,775 and 43,223,946

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Solution

The third proportional to 21,221,775 and 43,223,946 is: 88,037,381.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221,775 : 43,223,946 = 43,223,946 : x
  2. Step 2: Convert to fraction form
    21,221,775/43,223,946 = 43,223,946/x
  3. Step 3: Cross multiply
    21,221,775x = 43,223,946 × 43,223,946
  4. Step 4: Simplify right side
    21,221,775x = 1,868,309,507,810,916
  5. Step 5: Solve for x
    x = 1,868,309,507,810,916/21,221,775
  6. Step 6: Final answer
    x = 88,037,381.78

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.