Home / 80,578.08-120,867.15-30,646.64

Finding the Fourth Proportional to 80,578.08, 120,867.15 and 30,646.64

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Solution

The fourth proportional to 80,578.08, 120,867.15 and 30,646.64 is: 45,969.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,578.08 : 120,867.15 = 30,646.64 : x
  2. Step 2: Convert to fraction form
    80,578.08/120,867.15 = 30,646.64/x
  3. Step 3: Cross multiply
    80,578.08x = 120,867.15 × 30,646.64
  4. Step 4: Simplify right side
    80,578.08x = 3,704,171,429.54
  5. Step 5: Solve for x
    x = 3,704,171,429.54/80,578.08
  6. Step 6: Final answer
    x = 45,969.96

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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.