Home / 80,658.56-111,309.12-55,464.32

Finding the Fourth Proportional to 80,658.56, 111,309.12 and 55,464.32

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Solution

The fourth proportional to 80,658.56, 111,309.12 and 55,464.32 is: 76,540.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,658.56 : 111,309.12 = 55,464.32 : x
  2. Step 2: Convert to fraction form
    80,658.56/111,309.12 = 55,464.32/x
  3. Step 3: Cross multiply
    80,658.56x = 111,309.12 × 55,464.32
  4. Step 4: Simplify right side
    80,658.56x = 6,173,684,650.60
  5. Step 5: Solve for x
    x = 6,173,684,650.60/80,658.56
  6. Step 6: Final answer
    x = 76,540.97

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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.