Home / 80,847.28-121,216.08-28,228

Finding the Fourth Proportional to 80,847.28, 121,216.08 and 28,228

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Solution

The fourth proportional to 80,847.28, 121,216.08 and 28,228 is: 42,322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,847.28 : 121,216.08 = 28,228 : x
  2. Step 2: Convert to fraction form
    80,847.28/121,216.08 = 28,228/x
  3. Step 3: Cross multiply
    80,847.28x = 121,216.08 × 28,228
  4. Step 4: Simplify right side
    80,847.28x = 3,421,687,506.24
  5. Step 5: Solve for x
    x = 3,421,687,506.24/80,847.28
  6. Step 6: Final answer
    x = 42,322.85

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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.