Home / 80,950.76-121,352.16-28,331.56

Finding the Fourth Proportional to 80,950.76, 121,352.16 and 28,331.56

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Solution

The fourth proportional to 80,950.76, 121,352.16 and 28,331.56 is: 42,471.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.76 : 121,352.16 = 28,331.56 : x
  2. Step 2: Convert to fraction form
    80,950.76/121,352.16 = 28,331.56/x
  3. Step 3: Cross multiply
    80,950.76x = 121,352.16 × 28,331.56
  4. Step 4: Simplify right side
    80,950.76x = 3,438,096,002.17
  5. Step 5: Solve for x
    x = 3,438,096,002.17/80,950.76
  6. Step 6: Final answer
    x = 42,471.45

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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.