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Finding the Fourth Proportional to 74,197.86, 111,297 and 21,608.64

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Solution

The fourth proportional to 74,197.86, 111,297 and 21,608.64 is: 32,413.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,197.86 : 111,297 = 21,608.64 : x
  2. Step 2: Convert to fraction form
    74,197.86/111,297 = 21,608.64/x
  3. Step 3: Cross multiply
    74,197.86x = 111,297 × 21,608.64
  4. Step 4: Simplify right side
    74,197.86x = 2,404,976,806.08
  5. Step 5: Solve for x
    x = 2,404,976,806.08/74,197.86
  6. Step 6: Final answer
    x = 32,413.02

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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.