Home / 79,540.31-109,766.36-43,730.57

Finding the Fourth Proportional to 79,540.31, 109,766.36 and 43,730.57

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Solution

The fourth proportional to 79,540.31, 109,766.36 and 43,730.57 is: 60,348.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,540.31 : 109,766.36 = 43,730.57 : x
  2. Step 2: Convert to fraction form
    79,540.31/109,766.36 = 43,730.57/x
  3. Step 3: Cross multiply
    79,540.31x = 109,766.36 × 43,730.57
  4. Step 4: Simplify right side
    79,540.31x = 4,800,144,722.14
  5. Step 5: Solve for x
    x = 4,800,144,722.14/79,540.31
  6. Step 6: Final answer
    x = 60,348.58

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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.