Home / 79,540.55-109,766.70-43,730.81

Finding the Fourth Proportional to 79,540.55, 109,766.70 and 43,730.81

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Solution

The fourth proportional to 79,540.55, 109,766.70 and 43,730.81 is: 60,348.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,540.55 : 109,766.70 = 43,730.81 : x
  2. Step 2: Convert to fraction form
    79,540.55/109,766.70 = 43,730.81/x
  3. Step 3: Cross multiply
    79,540.55x = 109,766.70 × 43,730.81
  4. Step 4: Simplify right side
    79,540.55x = 4,800,186,976.44
  5. Step 5: Solve for x
    x = 4,800,186,976.44/79,540.55
  6. Step 6: Final answer
    x = 60,348.93

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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.