Home / 80,640.28-121,015.46-28,049.24

Finding the Fourth Proportional to 80,640.28, 121,015.46 and 28,049.24

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Solution

The fourth proportional to 80,640.28, 121,015.46 and 28,049.24 is: 42,093.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.28 : 121,015.46 = 28,049.24 : x
  2. Step 2: Convert to fraction form
    80,640.28/121,015.46 = 28,049.24/x
  3. Step 3: Cross multiply
    80,640.28x = 121,015.46 × 28,049.24
  4. Step 4: Simplify right side
    80,640.28x = 3,394,391,681.25
  5. Step 5: Solve for x
    x = 3,394,391,681.25/80,640.28
  6. Step 6: Final answer
    x = 42,093.00

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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.