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Finding the Third Proportional to 5,639,487 and 11,921,871

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Solution

The third proportional to 5,639,487 and 11,921,871 is: 25,202,825.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639,487 : 11,921,871 = 11,921,871 : x
  2. Step 2: Convert to fraction form
    5,639,487/11,921,871 = 11,921,871/x
  3. Step 3: Cross multiply
    5,639,487x = 11,921,871 × 11,921,871
  4. Step 4: Simplify right side
    5,639,487x = 142,131,008,140,641
  5. Step 5: Solve for x
    x = 142,131,008,140,641/5,639,487
  6. Step 6: Final answer
    x = 25,202,825.74

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.