Home / 80,563.85-111,181.26-55,123.57

Finding the Fourth Proportional to 80,563.85, 111,181.26 and 55,123.57

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Solution

The fourth proportional to 80,563.85, 111,181.26 and 55,123.57 is: 76,072.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,563.85 : 111,181.26 = 55,123.57 : x
  2. Step 2: Convert to fraction form
    80,563.85/111,181.26 = 55,123.57/x
  3. Step 3: Cross multiply
    80,563.85x = 111,181.26 × 55,123.57
  4. Step 4: Simplify right side
    80,563.85x = 6,128,708,313.99
  5. Step 5: Solve for x
    x = 6,128,708,313.99/80,563.85
  6. Step 6: Final answer
    x = 76,072.69

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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.