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Finding the Third Proportional to 18,007,920 and 39,431,124

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Solution

The third proportional to 18,007,920 and 39,431,124 is: 86,340,540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007,920 : 39,431,124 = 39,431,124 : x
  2. Step 2: Convert to fraction form
    18,007,920/39,431,124 = 39,431,124/x
  3. Step 3: Cross multiply
    18,007,920x = 39,431,124 × 39,431,124
  4. Step 4: Simplify right side
    18,007,920x = 1,554,813,539,903,376
  5. Step 5: Solve for x
    x = 1,554,813,539,903,376/18,007,920
  6. Step 6: Final answer
    x = 86,340,540.16

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.