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Finding the Fourth Proportional to 66,269.76, 91,458.72 and 49,473.60

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Solution

The fourth proportional to 66,269.76, 91,458.72 and 49,473.60 is: 68,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,269.76 : 91,458.72 = 49,473.60 : x
  2. Step 2: Convert to fraction form
    66,269.76/91,458.72 = 49,473.60/x
  3. Step 3: Cross multiply
    66,269.76x = 91,458.72 × 49,473.60
  4. Step 4: Simplify right side
    66,269.76x = 4,524,792,129.79
  5. Step 5: Solve for x
    x = 4,524,792,129.79/66,269.76
  6. Step 6: Final answer
    x = 68,278.38

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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.