Home / 80,797.10-121,140.97-28,177.88

Finding the Fourth Proportional to 80,797.10, 121,140.97 and 28,177.88

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Solution

The fourth proportional to 80,797.10, 121,140.97 and 28,177.88 is: 42,247.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,797.10 : 121,140.97 = 28,177.88 : x
  2. Step 2: Convert to fraction form
    80,797.10/121,140.97 = 28,177.88/x
  3. Step 3: Cross multiply
    80,797.10x = 121,140.97 × 28,177.88
  4. Step 4: Simplify right side
    80,797.10x = 3,413,495,039.59
  5. Step 5: Solve for x
    x = 3,413,495,039.59/80,797.10
  6. Step 6: Final answer
    x = 42,247.74

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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.