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Finding the Fourth Proportional to 66,413.30, 91,648.69 and 36,604.66

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Solution

The fourth proportional to 66,413.30, 91,648.69 and 36,604.66 is: 50,513.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,413.30 : 91,648.69 = 36,604.66 : x
  2. Step 2: Convert to fraction form
    66,413.30/91,648.69 = 36,604.66/x
  3. Step 3: Cross multiply
    66,413.30x = 91,648.69 × 36,604.66
  4. Step 4: Simplify right side
    66,413.30x = 3,354,769,136.90
  5. Step 5: Solve for x
    x = 3,354,769,136.90/66,413.30
  6. Step 6: Final answer
    x = 50,513.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.