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Finding the Fourth Proportional to 66,831.78, 100,240.61 and 35,229.18

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Solution

The fourth proportional to 66,831.78, 100,240.61 and 35,229.18 is: 52,840.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,831.78 : 100,240.61 = 35,229.18 : x
  2. Step 2: Convert to fraction form
    66,831.78/100,240.61 = 35,229.18/x
  3. Step 3: Cross multiply
    66,831.78x = 100,240.61 × 35,229.18
  4. Step 4: Simplify right side
    66,831.78x = 3,531,394,316.85
  5. Step 5: Solve for x
    x = 3,531,394,316.85/66,831.78
  6. Step 6: Final answer
    x = 52,840.05

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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.