Home / 79,039.85-109,025.12-55,157.81

Finding the Fourth Proportional to 79,039.85, 109,025.12 and 55,157.81

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Solution

The fourth proportional to 79,039.85, 109,025.12 and 55,157.81 is: 76,082.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,039.85 : 109,025.12 = 55,157.81 : x
  2. Step 2: Convert to fraction form
    79,039.85/109,025.12 = 55,157.81/x
  3. Step 3: Cross multiply
    79,039.85x = 109,025.12 × 55,157.81
  4. Step 4: Simplify right side
    79,039.85x = 6,013,586,033.27
  5. Step 5: Solve for x
    x = 6,013,586,033.27/79,039.85
  6. Step 6: Final answer
    x = 76,082.97

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1.5x scale

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.