Home / 80,888.91-121,250.74-28,255.11

Finding the Fourth Proportional to 80,888.91, 121,250.74 and 28,255.11

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Solution

The fourth proportional to 80,888.91, 121,250.74 and 28,255.11 is: 42,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,888.91 : 121,250.74 = 28,255.11 : x
  2. Step 2: Convert to fraction form
    80,888.91/121,250.74 = 28,255.11/x
  3. Step 3: Cross multiply
    80,888.91x = 121,250.74 × 28,255.11
  4. Step 4: Simplify right side
    80,888.91x = 3,425,952,996.28
  5. Step 5: Solve for x
    x = 3,425,952,996.28/80,888.91
  6. Step 6: Final answer
    x = 42,353.80

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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.