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Finding the Fourth Proportional to 45,969,751.80, 68,954,627.70 and 20,383,601.40

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Solution

The fourth proportional to 45,969,751.80, 68,954,627.70 and 20,383,601.40 is: 30,575,402.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,969,751.80 : 68,954,627.70 = 20,383,601.40 : x
  2. Step 2: Convert to fraction form
    45,969,751.80/68,954,627.70 = 20,383,601.40/x
  3. Step 3: Cross multiply
    45,969,751.80x = 68,954,627.70 × 20,383,601.40
  4. Step 4: Simplify right side
    45,969,751.80x = 1,405,543,645,722,198.75
  5. Step 5: Solve for x
    x = 1,405,543,645,722,198.75/45,969,751.80
  6. Step 6: Final answer
    x = 30,575,402.10

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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.