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Finding the Fourth Proportional to 50,766,676.80, 76,122,021.60 and 20,440,276.80

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Solution

The fourth proportional to 50,766,676.80, 76,122,021.60 and 20,440,276.80 is: 30,649,144.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,766,676.80 : 76,122,021.60 = 20,440,276.80 : x
  2. Step 2: Convert to fraction form
    50,766,676.80/76,122,021.60 = 20,440,276.80/x
  3. Step 3: Cross multiply
    50,766,676.80x = 76,122,021.60 × 20,440,276.80
  4. Step 4: Simplify right side
    50,766,676.80x = 1,555,955,192,079,578.75
  5. Step 5: Solve for x
    x = 1,555,955,192,079,578.75/50,766,676.80
  6. Step 6: Final answer
    x = 30,649,144.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.