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Finding the Third Proportional to 18,315,398 and 36,169,828

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Solution

The third proportional to 18,315,398 and 36,169,828 is: 71,429,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315,398 : 36,169,828 = 36,169,828 : x
  2. Step 2: Convert to fraction form
    18,315,398/36,169,828 = 36,169,828/x
  3. Step 3: Cross multiply
    18,315,398x = 36,169,828 × 36,169,828
  4. Step 4: Simplify right side
    18,315,398x = 1,308,256,457,549,584
  5. Step 5: Solve for x
    x = 1,308,256,457,549,584/18,315,398
  6. Step 6: Final answer
    x = 71,429,321.80

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.