Home / 40,761.20-61,150.60-12,680.72

Finding the Fourth Proportional to 40,761.20, 61,150.60 and 12,680.72

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Solution

The fourth proportional to 40,761.20, 61,150.60 and 12,680.72 is: 19,023.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,761.20 : 61,150.60 = 12,680.72 : x
  2. Step 2: Convert to fraction form
    40,761.20/61,150.60 = 12,680.72/x
  3. Step 3: Cross multiply
    40,761.20x = 61,150.60 × 12,680.72
  4. Step 4: Simplify right side
    40,761.20x = 775,433,636.43
  5. Step 5: Solve for x
    x = 775,433,636.43/40,761.20
  6. Step 6: Final answer
    x = 19,023.82

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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.