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Finding the Fourth Proportional to 50,651.20, 75,978.72 and 15,112

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Solution

The fourth proportional to 50,651.20, 75,978.72 and 15,112 is: 22,668.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,651.20 : 75,978.72 = 15,112 : x
  2. Step 2: Convert to fraction form
    50,651.20/75,978.72 = 15,112/x
  3. Step 3: Cross multiply
    50,651.20x = 75,978.72 × 15,112
  4. Step 4: Simplify right side
    50,651.20x = 1,148,190,416.64
  5. Step 5: Solve for x
    x = 1,148,190,416.64/50,651.20
  6. Step 6: Final answer
    x = 22,668.57

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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.