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Finding the Third Proportional to 5,639,547 and 11,921,991

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Solution

The third proportional to 5,639,547 and 11,921,991 is: 25,203,064.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639,547 : 11,921,991 = 11,921,991 : x
  2. Step 2: Convert to fraction form
    5,639,547/11,921,991 = 11,921,991/x
  3. Step 3: Cross multiply
    5,639,547x = 11,921,991 × 11,921,991
  4. Step 4: Simplify right side
    5,639,547x = 142,133,869,404,081
  5. Step 5: Solve for x
    x = 142,133,869,404,081/5,639,547
  6. Step 6: Final answer
    x = 25,203,064.96

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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.