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Finding the Fourth Proportional to 67,628.69, 101,377.11 and 28,197.08

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Solution

The fourth proportional to 67,628.69, 101,377.11 and 28,197.08 is: 42,268.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,628.69 : 101,377.11 = 28,197.08 : x
  2. Step 2: Convert to fraction form
    67,628.69/101,377.11 = 28,197.08/x
  3. Step 3: Cross multiply
    67,628.69x = 101,377.11 × 28,197.08
  4. Step 4: Simplify right side
    67,628.69x = 2,858,538,339.85
  5. Step 5: Solve for x
    x = 2,858,538,339.85/67,628.69
  6. Step 6: Final answer
    x = 42,268.13

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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.