Home / 80,950.82-121,352.72-28,331.60

Finding the Fourth Proportional to 80,950.82, 121,352.72 and 28,331.60

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Solution

The fourth proportional to 80,950.82, 121,352.72 and 28,331.60 is: 42,471.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.82 : 121,352.72 = 28,331.60 : x
  2. Step 2: Convert to fraction form
    80,950.82/121,352.72 = 28,331.60/x
  3. Step 3: Cross multiply
    80,950.82x = 121,352.72 × 28,331.60
  4. Step 4: Simplify right side
    80,950.82x = 3,438,116,347.74
  5. Step 5: Solve for x
    x = 3,438,116,347.74/80,950.82
  6. Step 6: Final answer
    x = 42,471.67

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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.