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Finding the Third Proportional to 9,955,019 and 21,719,728

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Solution

The third proportional to 9,955,019 and 21,719,728 is: 47,387,813.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,955,019 : 21,719,728 = 21,719,728 : x
  2. Step 2: Convert to fraction form
    9,955,019/21,719,728 = 21,719,728/x
  3. Step 3: Cross multiply
    9,955,019x = 21,719,728 × 21,719,728
  4. Step 4: Simplify right side
    9,955,019x = 471,746,584,393,984
  5. Step 5: Solve for x
    x = 471,746,584,393,984/9,955,019
  6. Step 6: Final answer
    x = 47,387,813.56

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.