Home / 80,876.96-121,326.76-28,274.48

Finding the Fourth Proportional to 80,876.96, 121,326.76 and 28,274.48

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Solution

The fourth proportional to 80,876.96, 121,326.76 and 28,274.48 is: 42,415.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,876.96 : 121,326.76 = 28,274.48 : x
  2. Step 2: Convert to fraction form
    80,876.96/121,326.76 = 28,274.48/x
  3. Step 3: Cross multiply
    80,876.96x = 121,326.76 × 28,274.48
  4. Step 4: Simplify right side
    80,876.96x = 3,430,451,049.08
  5. Step 5: Solve for x
    x = 3,430,451,049.08/80,876.96
  6. Step 6: Final answer
    x = 42,415.68

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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.