Home / 80,789.14-111,450.72-56,928.94

Finding the Fourth Proportional to 80,789.14, 111,450.72 and 56,928.94

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Solution

The fourth proportional to 80,789.14, 111,450.72 and 56,928.94 is: 78,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,789.14 : 111,450.72 = 56,928.94 : x
  2. Step 2: Convert to fraction form
    80,789.14/111,450.72 = 56,928.94/x
  3. Step 3: Cross multiply
    80,789.14x = 111,450.72 × 56,928.94
  4. Step 4: Simplify right side
    80,789.14x = 6,344,771,351.84
  5. Step 5: Solve for x
    x = 6,344,771,351.84/80,789.14
  6. Step 6: Final answer
    x = 78,534.95

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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.