Home / 78,324.20-108,143.58-48,150

Finding the Fourth Proportional to 78,324.20, 108,143.58 and 48,150

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Solution

The fourth proportional to 78,324.20, 108,143.58 and 48,150 is: 66,481.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,324.20 : 108,143.58 = 48,150 : x
  2. Step 2: Convert to fraction form
    78,324.20/108,143.58 = 48,150/x
  3. Step 3: Cross multiply
    78,324.20x = 108,143.58 × 48,150
  4. Step 4: Simplify right side
    78,324.20x = 5,207,113,377
  5. Step 5: Solve for x
    x = 5,207,113,377/78,324.20
  6. Step 6: Final answer
    x = 66,481.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.