Home / 80,589.28-120,906.60-28,004.08

Finding the Fourth Proportional to 80,589.28, 120,906.60 and 28,004.08

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Solution

The fourth proportional to 80,589.28, 120,906.60 and 28,004.08 is: 42,014.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,589.28 : 120,906.60 = 28,004.08 : x
  2. Step 2: Convert to fraction form
    80,589.28/120,906.60 = 28,004.08/x
  3. Step 3: Cross multiply
    80,589.28x = 120,906.60 × 28,004.08
  4. Step 4: Simplify right side
    80,589.28x = 3,385,878,098.93
  5. Step 5: Solve for x
    x = 3,385,878,098.93/80,589.28
  6. Step 6: Final answer
    x = 42,014.00

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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.