Home / 71,482,694.78-107,206,327.47-20,365,156.46

Finding the Fourth Proportional to 71,482,694.78, 107,206,327.47 and 20,365,156.46

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Solution

The fourth proportional to 71,482,694.78, 107,206,327.47 and 20,365,156.46 is: 30,542,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,482,694.78 : 107,206,327.47 = 20,365,156.46 : x
  2. Step 2: Convert to fraction form
    71,482,694.78/107,206,327.47 = 20,365,156.46/x
  3. Step 3: Cross multiply
    71,482,694.78x = 107,206,327.47 × 20,365,156.46
  4. Step 4: Simplify right side
    71,482,694.78x = 2,183,273,632,428,546
  5. Step 5: Solve for x
    x = 2,183,273,632,428,546/71,482,694.78
  6. Step 6: Final answer
    x = 30,542,687.84

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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.