Home / 80,819.64-121,247.64-30,898.44

Finding the Fourth Proportional to 80,819.64, 121,247.64 and 30,898.44

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Solution

The fourth proportional to 80,819.64, 121,247.64 and 30,898.44 is: 46,354.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,819.64 : 121,247.64 = 30,898.44 : x
  2. Step 2: Convert to fraction form
    80,819.64/121,247.64 = 30,898.44/x
  3. Step 3: Cross multiply
    80,819.64x = 121,247.64 × 30,898.44
  4. Step 4: Simplify right side
    80,819.64x = 3,746,362,929.68
  5. Step 5: Solve for x
    x = 3,746,362,929.68/80,819.64
  6. Step 6: Final answer
    x = 46,354.61

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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.