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Finding the Third Proportional to 7,129,911 and 15,396,089

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Solution

The third proportional to 7,129,911 and 15,396,089 is: 33,245,794.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129,911 : 15,396,089 = 15,396,089 : x
  2. Step 2: Convert to fraction form
    7,129,911/15,396,089 = 15,396,089/x
  3. Step 3: Cross multiply
    7,129,911x = 15,396,089 × 15,396,089
  4. Step 4: Simplify right side
    7,129,911x = 237,039,556,495,921
  5. Step 5: Solve for x
    x = 237,039,556,495,921/7,129,911
  6. Step 6: Final answer
    x = 33,245,794.58

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.