Home / 80,849.28-121,219.08-28,230

Finding the Fourth Proportional to 80,849.28, 121,219.08 and 28,230

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Solution

The fourth proportional to 80,849.28, 121,219.08 and 28,230 is: 42,325.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,849.28 : 121,219.08 = 28,230 : x
  2. Step 2: Convert to fraction form
    80,849.28/121,219.08 = 28,230/x
  3. Step 3: Cross multiply
    80,849.28x = 121,219.08 × 28,230
  4. Step 4: Simplify right side
    80,849.28x = 3,422,014,628.40
  5. Step 5: Solve for x
    x = 3,422,014,628.40/80,849.28
  6. Step 6: Final answer
    x = 42,325.85

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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.