Home / 80,723.27-121,084.91-21,555.81

Finding the Fourth Proportional to 80,723.27, 121,084.91 and 21,555.81

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Solution

The fourth proportional to 80,723.27, 121,084.91 and 21,555.81 is: 32,333.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,723.27 : 121,084.91 = 21,555.81 : x
  2. Step 2: Convert to fraction form
    80,723.27/121,084.91 = 21,555.81/x
  3. Step 3: Cross multiply
    80,723.27x = 121,084.91 × 21,555.81
  4. Step 4: Simplify right side
    80,723.27x = 2,610,083,206.05
  5. Step 5: Solve for x
    x = 2,610,083,206.05/80,723.27
  6. Step 6: Final answer
    x = 32,333.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.