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Finding the Fourth Proportional to 109,879.20, 164,809.20 and 36,007.20

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Solution

The fourth proportional to 109,879.20, 164,809.20 and 36,007.20 is: 54,007.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,879.20 : 164,809.20 = 36,007.20 : x
  2. Step 2: Convert to fraction form
    109,879.20/164,809.20 = 36,007.20/x
  3. Step 3: Cross multiply
    109,879.20x = 164,809.20 × 36,007.20
  4. Step 4: Simplify right side
    109,879.20x = 5,934,317,826.24
  5. Step 5: Solve for x
    x = 5,934,317,826.24/109,879.20
  6. Step 6: Final answer
    x = 54,007.65

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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.