Home / 71,482,692.78-107,206,324.47-20,365,154.46

Finding the Fourth Proportional to 71,482,692.78, 107,206,324.47 and 20,365,154.46

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Solution

The fourth proportional to 71,482,692.78, 107,206,324.47 and 20,365,154.46 is: 30,542,684.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,482,692.78 : 107,206,324.47 = 20,365,154.46 : x
  2. Step 2: Convert to fraction form
    71,482,692.78/107,206,324.47 = 20,365,154.46/x
  3. Step 3: Cross multiply
    71,482,692.78x = 107,206,324.47 × 20,365,154.46
  4. Step 4: Simplify right side
    71,482,692.78x = 2,183,273,356,920,427.75
  5. Step 5: Solve for x
    x = 2,183,273,356,920,427.75/71,482,692.78
  6. Step 6: Final answer
    x = 30,542,684.84

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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.