Home / 80,791.34-121,242.38-28,200.84

Finding the Fourth Proportional to 80,791.34, 121,242.38 and 28,200.84

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Solution

The fourth proportional to 80,791.34, 121,242.38 and 28,200.84 is: 42,320.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,791.34 : 121,242.38 = 28,200.84 : x
  2. Step 2: Convert to fraction form
    80,791.34/121,242.38 = 28,200.84/x
  3. Step 3: Cross multiply
    80,791.34x = 121,242.38 × 28,200.84
  4. Step 4: Simplify right side
    80,791.34x = 3,419,136,959.60
  5. Step 5: Solve for x
    x = 3,419,136,959.60/80,791.34
  6. Step 6: Final answer
    x = 42,320.59

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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.