Home / 79,976.92-120,039.19-40,561.72

Finding the Fourth Proportional to 79,976.92, 120,039.19 and 40,561.72

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Solution

The fourth proportional to 79,976.92, 120,039.19 and 40,561.72 is: 60,880.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,976.92 : 120,039.19 = 40,561.72 : x
  2. Step 2: Convert to fraction form
    79,976.92/120,039.19 = 40,561.72/x
  3. Step 3: Cross multiply
    79,976.92x = 120,039.19 × 40,561.72
  4. Step 4: Simplify right side
    79,976.92x = 4,868,996,013.81
  5. Step 5: Solve for x
    x = 4,868,996,013.81/79,976.92
  6. Step 6: Final answer
    x = 60,880.01

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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.