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Finding the Fourth Proportional to 67,194,144.80, 100,809,879.60 and 28,874,016.80

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Solution

The fourth proportional to 67,194,144.80, 100,809,879.60 and 28,874,016.80 is: 43,319,044.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,194,144.80 : 100,809,879.60 = 28,874,016.80 : x
  2. Step 2: Convert to fraction form
    67,194,144.80/100,809,879.60 = 28,874,016.80/x
  3. Step 3: Cross multiply
    67,194,144.80x = 100,809,879.60 × 28,874,016.80
  4. Step 4: Simplify right side
    67,194,144.80x = 2,910,786,157,176,377
  5. Step 5: Solve for x
    x = 2,910,786,157,176,377/67,194,144.80
  6. Step 6: Final answer
    x = 43,319,044.63

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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.