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Finding the Third Proportional to 38,631,879 and 81,869,580

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Solution

The third proportional to 38,631,879 and 81,869,580 is: 173,499,925.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,631,879 : 81,869,580 = 81,869,580 : x
  2. Step 2: Convert to fraction form
    38,631,879/81,869,580 = 81,869,580/x
  3. Step 3: Cross multiply
    38,631,879x = 81,869,580 × 81,869,580
  4. Step 4: Simplify right side
    38,631,879x = 6,702,628,129,376,400
  5. Step 5: Solve for x
    x = 6,702,628,129,376,400/38,631,879
  6. Step 6: Final answer
    x = 173,499,925.52

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.