Home / 80,660.56-111,311.88-55,466.32

Finding the Fourth Proportional to 80,660.56, 111,311.88 and 55,466.32

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Solution

The fourth proportional to 80,660.56, 111,311.88 and 55,466.32 is: 76,543.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660.56 : 111,311.88 = 55,466.32 : x
  2. Step 2: Convert to fraction form
    80,660.56/111,311.88 = 55,466.32/x
  3. Step 3: Cross multiply
    80,660.56x = 111,311.88 × 55,466.32
  4. Step 4: Simplify right side
    80,660.56x = 6,174,060,355.88
  5. Step 5: Solve for x
    x = 6,174,060,355.88/80,660.56
  6. Step 6: Final answer
    x = 76,543.73

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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.