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Finding the Fourth Proportional to 67,578, 101,367.36 and 18,330

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Solution

The fourth proportional to 67,578, 101,367.36 and 18,330 is: 27,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,578 : 101,367.36 = 18,330 : x
  2. Step 2: Convert to fraction form
    67,578/101,367.36 = 18,330/x
  3. Step 3: Cross multiply
    67,578x = 101,367.36 × 18,330
  4. Step 4: Simplify right side
    67,578x = 1,858,063,708.80
  5. Step 5: Solve for x
    x = 1,858,063,708.80/67,578
  6. Step 6: Final answer
    x = 27,495.10

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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.