Home / 80,954.20-121,342.20-28,336.60

Finding the Fourth Proportional to 80,954.20, 121,342.20 and 28,336.60

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Solution

The fourth proportional to 80,954.20, 121,342.20 and 28,336.60 is: 42,473.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,954.20 : 121,342.20 = 28,336.60 : x
  2. Step 2: Convert to fraction form
    80,954.20/121,342.20 = 28,336.60/x
  3. Step 3: Cross multiply
    80,954.20x = 121,342.20 × 28,336.60
  4. Step 4: Simplify right side
    80,954.20x = 3,438,425,384.52
  5. Step 5: Solve for x
    x = 3,438,425,384.52/80,954.20
  6. Step 6: Final answer
    x = 42,473.71

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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.