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Finding the Fourth Proportional to 28,102.05, 42,148.41 and 8,375.99

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Solution

The fourth proportional to 28,102.05, 42,148.41 and 8,375.99 is: 12,562.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.05 : 42,148.41 = 8,375.99 : x
  2. Step 2: Convert to fraction form
    28,102.05/42,148.41 = 8,375.99/x
  3. Step 3: Cross multiply
    28,102.05x = 42,148.41 × 8,375.99
  4. Step 4: Simplify right side
    28,102.05x = 353,034,449.93
  5. Step 5: Solve for x
    x = 353,034,449.93/28,102.05
  6. Step 6: Final answer
    x = 12,562.59

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1.5x scale

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.