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Finding the Fourth Proportional to 66,859.62, 100,284.39 and 24,720

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Solution

The fourth proportional to 66,859.62, 100,284.39 and 24,720 is: 37,078.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,859.62 : 100,284.39 = 24,720 : x
  2. Step 2: Convert to fraction form
    66,859.62/100,284.39 = 24,720/x
  3. Step 3: Cross multiply
    66,859.62x = 100,284.39 × 24,720
  4. Step 4: Simplify right side
    66,859.62x = 2,479,030,120.80
  5. Step 5: Solve for x
    x = 2,479,030,120.80/66,859.62
  6. Step 6: Final answer
    x = 37,078.14

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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.