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Finding the Third Proportional to 38,774,990 and 81,561,244

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Solution

The third proportional to 38,774,990 and 81,561,244 is: 171,559,980.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,774,990 : 81,561,244 = 81,561,244 : x
  2. Step 2: Convert to fraction form
    38,774,990/81,561,244 = 81,561,244/x
  3. Step 3: Cross multiply
    38,774,990x = 81,561,244 × 81,561,244
  4. Step 4: Simplify right side
    38,774,990x = 6,652,236,522,827,536
  5. Step 5: Solve for x
    x = 6,652,236,522,827,536/38,774,990
  6. Step 6: Final answer
    x = 171,559,980.36

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.