Home / 80,876.71-121,326.39-28,274.23

Finding the Fourth Proportional to 80,876.71, 121,326.39 and 28,274.23

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Solution

The fourth proportional to 80,876.71, 121,326.39 and 28,274.23 is: 42,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,876.71 : 121,326.39 = 28,274.23 : x
  2. Step 2: Convert to fraction form
    80,876.71/121,326.39 = 28,274.23/x
  3. Step 3: Cross multiply
    80,876.71x = 121,326.39 × 28,274.23
  4. Step 4: Simplify right side
    80,876.71x = 3,430,410,255.93
  5. Step 5: Solve for x
    x = 3,430,410,255.93/80,876.71
  6. Step 6: Final answer
    x = 42,415.30

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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.