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Finding the Third Proportional to 18,172,490 and 38,396,382

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Solution

The third proportional to 18,172,490 and 38,396,382 is: 81,127,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172,490 : 38,396,382 = 38,396,382 : x
  2. Step 2: Convert to fraction form
    18,172,490/38,396,382 = 38,396,382/x
  3. Step 3: Cross multiply
    18,172,490x = 38,396,382 × 38,396,382
  4. Step 4: Simplify right side
    18,172,490x = 1,474,282,150,689,924
  5. Step 5: Solve for x
    x = 1,474,282,150,689,924/18,172,490
  6. Step 6: Final answer
    x = 81,127,140.57

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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.