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Finding the Third Proportional to 3,145,138.88 and 6,879,117.38

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Solution

The third proportional to 3,145,138.88 and 6,879,117.38 is: 15,046,157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145,138.88 : 6,879,117.38 = 6,879,117.38 : x
  2. Step 2: Convert to fraction form
    3,145,138.88/6,879,117.38 = 6,879,117.38/x
  3. Step 3: Cross multiply
    3,145,138.88x = 6,879,117.38 × 6,879,117.38
  4. Step 4: Simplify right side
    3,145,138.88x = 47,322,255,859,026.89
  5. Step 5: Solve for x
    x = 47,322,255,859,026.89/3,145,138.88
  6. Step 6: Final answer
    x = 15,046,157.81

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.