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Finding the Fourth Proportional to 67,928.45, 101,859.90 and 28,474.97

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Solution

The fourth proportional to 67,928.45, 101,859.90 and 28,474.97 is: 42,698.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,928.45 : 101,859.90 = 28,474.97 : x
  2. Step 2: Convert to fraction form
    67,928.45/101,859.90 = 28,474.97/x
  3. Step 3: Cross multiply
    67,928.45x = 101,859.90 × 28,474.97
  4. Step 4: Simplify right side
    67,928.45x = 2,900,456,980.62
  5. Step 5: Solve for x
    x = 2,900,456,980.62/67,928.45
  6. Step 6: Final answer
    x = 42,698.71

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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.