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Finding the Third Proportional to 30,702,928 and 66,188,582

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Solution

The third proportional to 30,702,928 and 66,188,582 is: 142,687,641.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,702,928 : 66,188,582 = 66,188,582 : x
  2. Step 2: Convert to fraction form
    30,702,928/66,188,582 = 66,188,582/x
  3. Step 3: Cross multiply
    30,702,928x = 66,188,582 × 66,188,582
  4. Step 4: Simplify right side
    30,702,928x = 4,380,928,387,170,724
  5. Step 5: Solve for x
    x = 4,380,928,387,170,724/30,702,928
  6. Step 6: Final answer
    x = 142,687,641.62

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.