Home / 80,686.16-120,979.86-33,286.58

Finding the Fourth Proportional to 80,686.16, 120,979.86 and 33,286.58

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Solution

The fourth proportional to 80,686.16, 120,979.86 and 33,286.58 is: 49,909.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,686.16 : 120,979.86 = 33,286.58 : x
  2. Step 2: Convert to fraction form
    80,686.16/120,979.86 = 33,286.58/x
  3. Step 3: Cross multiply
    80,686.16x = 120,979.86 × 33,286.58
  4. Step 4: Simplify right side
    80,686.16x = 4,027,005,788.28
  5. Step 5: Solve for x
    x = 4,027,005,788.28/80,686.16
  6. Step 6: Final answer
    x = 49,909.50

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1.5x scale

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.