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Finding the Fourth Proportional to 73,377.68, 109,991.20 and 28,986.48

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Solution

The fourth proportional to 73,377.68, 109,991.20 and 28,986.48 is: 43,449.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,377.68 : 109,991.20 = 28,986.48 : x
  2. Step 2: Convert to fraction form
    73,377.68/109,991.20 = 28,986.48/x
  3. Step 3: Cross multiply
    73,377.68x = 109,991.20 × 28,986.48
  4. Step 4: Simplify right side
    73,377.68x = 3,188,257,718.98
  5. Step 5: Solve for x
    x = 3,188,257,718.98/73,377.68
  6. Step 6: Final answer
    x = 43,449.97

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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.