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Finding the Third Proportional to 8,680,128.75 and 18,556,060.50

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Solution

The third proportional to 8,680,128.75 and 18,556,060.50 is: 39,668,464.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680,128.75 : 18,556,060.50 = 18,556,060.50 : x
  2. Step 2: Convert to fraction form
    8,680,128.75/18,556,060.50 = 18,556,060.50/x
  3. Step 3: Cross multiply
    8,680,128.75x = 18,556,060.50 × 18,556,060.50
  4. Step 4: Simplify right side
    8,680,128.75x = 344,327,381,279,660.25
  5. Step 5: Solve for x
    x = 344,327,381,279,660.25/8,680,128.75
  6. Step 6: Final answer
    x = 39,668,464.74

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.