Home / 80,972,578.80-121,458,868.20-60,644,960.55

Finding the Fourth Proportional to 80,972,578.80, 121,458,868.20 and 60,644,960.55

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Solution

The fourth proportional to 80,972,578.80, 121,458,868.20 and 60,644,960.55 is: 90,967,440.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,972,578.80 : 121,458,868.20 = 60,644,960.55 : x
  2. Step 2: Convert to fraction form
    80,972,578.80/121,458,868.20 = 60,644,960.55/x
  3. Step 3: Cross multiply
    80,972,578.80x = 121,458,868.20 × 60,644,960.55
  4. Step 4: Simplify right side
    80,972,578.80x = 7,365,868,270,436,649
  5. Step 5: Solve for x
    x = 7,365,868,270,436,649/80,972,578.80
  6. Step 6: Final answer
    x = 90,967,440.83

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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.