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Finding the Fourth Proportional to 40,951.52, 61,425.12 and 20,168

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Solution

The fourth proportional to 40,951.52, 61,425.12 and 20,168 is: 30,250.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,951.52 : 61,425.12 = 20,168 : x
  2. Step 2: Convert to fraction form
    40,951.52/61,425.12 = 20,168/x
  3. Step 3: Cross multiply
    40,951.52x = 61,425.12 × 20,168
  4. Step 4: Simplify right side
    40,951.52x = 1,238,821,820.16
  5. Step 5: Solve for x
    x = 1,238,821,820.16/40,951.52
  6. Step 6: Final answer
    x = 30,250.94

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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.