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Finding the Fourth Proportional to 45,367.39, 68,006.74 and 20,413.72

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Solution

The fourth proportional to 45,367.39, 68,006.74 and 20,413.72 is: 30,600.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,367.39 : 68,006.74 = 20,413.72 : x
  2. Step 2: Convert to fraction form
    45,367.39/68,006.74 = 20,413.72/x
  3. Step 3: Cross multiply
    45,367.39x = 68,006.74 × 20,413.72
  4. Step 4: Simplify right side
    45,367.39x = 1,388,270,548.47
  5. Step 5: Solve for x
    x = 1,388,270,548.47/45,367.39
  6. Step 6: Final answer
    x = 30,600.63

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1.5x scale

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.