Home / 89,022.70-122,908.69-79,446.21

Finding the Fourth Proportional to 89,022.70, 122,908.69 and 79,446.21

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Solution

The fourth proportional to 89,022.70, 122,908.69 and 79,446.21 is: 109,686.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,022.70 : 122,908.69 = 79,446.21 : x
  2. Step 2: Convert to fraction form
    89,022.70/122,908.69 = 79,446.21/x
  3. Step 3: Cross multiply
    89,022.70x = 122,908.69 × 79,446.21
  4. Step 4: Simplify right side
    89,022.70x = 9,764,629,596.56
  5. Step 5: Solve for x
    x = 9,764,629,596.56/89,022.70
  6. Step 6: Final answer
    x = 109,686.96

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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.