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Finding the Fourth Proportional to 66,988.90, 100,413.42 and 22,600.36

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Solution

The fourth proportional to 66,988.90, 100,413.42 and 22,600.36 is: 33,876.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,988.90 : 100,413.42 = 22,600.36 : x
  2. Step 2: Convert to fraction form
    66,988.90/100,413.42 = 22,600.36/x
  3. Step 3: Cross multiply
    66,988.90x = 100,413.42 × 22,600.36
  4. Step 4: Simplify right side
    66,988.90x = 2,269,379,440.83
  5. Step 5: Solve for x
    x = 2,269,379,440.83/66,988.90
  6. Step 6: Final answer
    x = 33,876.95

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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.