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Finding the Third Proportional to 18,984,654 and 39,315,150

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Solution

The third proportional to 18,984,654 and 39,315,150 is: 81,417,392.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984,654 : 39,315,150 = 39,315,150 : x
  2. Step 2: Convert to fraction form
    18,984,654/39,315,150 = 39,315,150/x
  3. Step 3: Cross multiply
    18,984,654x = 39,315,150 × 39,315,150
  4. Step 4: Simplify right side
    18,984,654x = 1,545,681,019,522,500
  5. Step 5: Solve for x
    x = 1,545,681,019,522,500/18,984,654
  6. Step 6: Final answer
    x = 81,417,392.15

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.