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Finding the Fourth Proportional to 73,014.35, 109,479.61 and 28,589.09

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Solution

The fourth proportional to 73,014.35, 109,479.61 and 28,589.09 is: 42,867.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,014.35 : 109,479.61 = 28,589.09 : x
  2. Step 2: Convert to fraction form
    73,014.35/109,479.61 = 28,589.09/x
  3. Step 3: Cross multiply
    73,014.35x = 109,479.61 × 28,589.09
  4. Step 4: Simplify right side
    73,014.35x = 3,129,922,625.68
  5. Step 5: Solve for x
    x = 3,129,922,625.68/73,014.35
  6. Step 6: Final answer
    x = 42,867.22

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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.