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Finding the Third Proportional to 21,022,200 and 45,186,870

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Solution

The third proportional to 21,022,200 and 45,186,870 is: 97,128,427.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,200 : 45,186,870 = 45,186,870 : x
  2. Step 2: Convert to fraction form
    21,022,200/45,186,870 = 45,186,870/x
  3. Step 3: Cross multiply
    21,022,200x = 45,186,870 × 45,186,870
  4. Step 4: Simplify right side
    21,022,200x = 2,041,853,220,396,900
  5. Step 5: Solve for x
    x = 2,041,853,220,396,900/21,022,200
  6. Step 6: Final answer
    x = 97,128,427.11

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.