Home / 80,672.56-111,339.78-48,408.64

Finding the Fourth Proportional to 80,672.56, 111,339.78 and 48,408.64

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Solution

The fourth proportional to 80,672.56, 111,339.78 and 48,408.64 is: 66,810.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,672.56 : 111,339.78 = 48,408.64 : x
  2. Step 2: Convert to fraction form
    80,672.56/111,339.78 = 48,408.64/x
  3. Step 3: Cross multiply
    80,672.56x = 111,339.78 × 48,408.64
  4. Step 4: Simplify right side
    80,672.56x = 5,389,807,327.70
  5. Step 5: Solve for x
    x = 5,389,807,327.70/80,672.56
  6. Step 6: Final answer
    x = 66,810.91

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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.