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Finding the Fourth Proportional to 66,245.10, 91,413.53 and 36,029.80

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Solution

The fourth proportional to 66,245.10, 91,413.53 and 36,029.80 is: 49,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,245.10 : 91,413.53 = 36,029.80 : x
  2. Step 2: Convert to fraction form
    66,245.10/91,413.53 = 36,029.80/x
  3. Step 3: Cross multiply
    66,245.10x = 91,413.53 × 36,029.80
  4. Step 4: Simplify right side
    66,245.10x = 3,293,611,023.05
  5. Step 5: Solve for x
    x = 3,293,611,023.05/66,245.10
  6. Step 6: Final answer
    x = 49,718.56

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1.5x scale

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.