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Finding the Fourth Proportional to 67,555.52, 101,324.64 and 28,105.28

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Solution

The fourth proportional to 67,555.52, 101,324.64 and 28,105.28 is: 42,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,555.52 : 101,324.64 = 28,105.28 : x
  2. Step 2: Convert to fraction form
    67,555.52/101,324.64 = 28,105.28/x
  3. Step 3: Cross multiply
    67,555.52x = 101,324.64 × 28,105.28
  4. Step 4: Simplify right side
    67,555.52x = 2,847,757,378.10
  5. Step 5: Solve for x
    x = 2,847,757,378.10/67,555.52
  6. Step 6: Final answer
    x = 42,154.33

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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.