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Finding the Third Proportional to 8,706,939 and 20,332,128

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Solution

The third proportional to 8,706,939 and 20,332,128 is: 47,478,847.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706,939 : 20,332,128 = 20,332,128 : x
  2. Step 2: Convert to fraction form
    8,706,939/20,332,128 = 20,332,128/x
  3. Step 3: Cross multiply
    8,706,939x = 20,332,128 × 20,332,128
  4. Step 4: Simplify right side
    8,706,939x = 413,395,429,008,384
  5. Step 5: Solve for x
    x = 413,395,429,008,384/8,706,939
  6. Step 6: Final answer
    x = 47,478,847.50

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.