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Finding the Third Proportional to 38,774,986 and 81,561,236

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Solution

The third proportional to 38,774,986 and 81,561,236 is: 171,559,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,774,986 : 81,561,236 = 81,561,236 : x
  2. Step 2: Convert to fraction form
    38,774,986/81,561,236 = 81,561,236/x
  3. Step 3: Cross multiply
    38,774,986x = 81,561,236 × 81,561,236
  4. Step 4: Simplify right side
    38,774,986x = 6,652,235,217,847,696
  5. Step 5: Solve for x
    x = 6,652,235,217,847,696/38,774,986
  6. Step 6: Final answer
    x = 171,559,964.40

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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.