Home / 80,950.41-121,352.11-28,331.19

Finding the Fourth Proportional to 80,950.41, 121,352.11 and 28,331.19

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Solution

The fourth proportional to 80,950.41, 121,352.11 and 28,331.19 is: 42,471.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.41 : 121,352.11 = 28,331.19 : x
  2. Step 2: Convert to fraction form
    80,950.41/121,352.11 = 28,331.19/x
  3. Step 3: Cross multiply
    80,950.41x = 121,352.11 × 28,331.19
  4. Step 4: Simplify right side
    80,950.41x = 3,438,049,614.48
  5. Step 5: Solve for x
    x = 3,438,049,614.48/80,950.41
  6. Step 6: Final answer
    x = 42,471.06

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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.