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Finding the Third Proportional to 20,213,128 and 31,100,396

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Solution

The third proportional to 20,213,128 and 31,100,396 is: 47,851,803.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213,128 : 31,100,396 = 31,100,396 : x
  2. Step 2: Convert to fraction form
    20,213,128/31,100,396 = 31,100,396/x
  3. Step 3: Cross multiply
    20,213,128x = 31,100,396 × 31,100,396
  4. Step 4: Simplify right side
    20,213,128x = 967,234,631,356,816
  5. Step 5: Solve for x
    x = 967,234,631,356,816/20,213,128
  6. Step 6: Final answer
    x = 47,851,803.61

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.