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Finding the Third Proportional to 39,169,486 and 81,518,078

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Solution

The third proportional to 39,169,486 and 81,518,078 is: 169,652,393.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,169,486 : 81,518,078 = 81,518,078 : x
  2. Step 2: Convert to fraction form
    39,169,486/81,518,078 = 81,518,078/x
  3. Step 3: Cross multiply
    39,169,486x = 81,518,078 × 81,518,078
  4. Step 4: Simplify right side
    39,169,486x = 6,645,197,040,814,084
  5. Step 5: Solve for x
    x = 6,645,197,040,814,084/39,169,486
  6. Step 6: Final answer
    x = 169,652,393.21

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.