Home / 71,482,693.78-107,206,325.97-20,365,155.46

Finding the Fourth Proportional to 71,482,693.78, 107,206,325.97 and 20,365,155.46

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Solution

The fourth proportional to 71,482,693.78, 107,206,325.97 and 20,365,155.46 is: 30,542,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,482,693.78 : 107,206,325.97 = 20,365,155.46 : x
  2. Step 2: Convert to fraction form
    71,482,693.78/107,206,325.97 = 20,365,155.46/x
  3. Step 3: Cross multiply
    71,482,693.78x = 107,206,325.97 × 20,365,155.46
  4. Step 4: Simplify right side
    71,482,693.78x = 2,183,273,494,674,485.25
  5. Step 5: Solve for x
    x = 2,183,273,494,674,485.25/71,482,693.78
  6. Step 6: Final answer
    x = 30,542,686.34

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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.