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Finding the Third Proportional to 18,685,434 and 40,164,396

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Solution

The third proportional to 18,685,434 and 40,164,396 is: 86,333,488.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685,434 : 40,164,396 = 40,164,396 : x
  2. Step 2: Convert to fraction form
    18,685,434/40,164,396 = 40,164,396/x
  3. Step 3: Cross multiply
    18,685,434x = 40,164,396 × 40,164,396
  4. Step 4: Simplify right side
    18,685,434x = 1,613,178,706,044,816
  5. Step 5: Solve for x
    x = 1,613,178,706,044,816/18,685,434
  6. Step 6: Final answer
    x = 86,333,488.75

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.