Home / 80,308.76-120,464.09-38,192.90

Finding the Fourth Proportional to 80,308.76, 120,464.09 and 38,192.90

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Solution

The fourth proportional to 80,308.76, 120,464.09 and 38,192.90 is: 57,289.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,308.76 : 120,464.09 = 38,192.90 : x
  2. Step 2: Convert to fraction form
    80,308.76/120,464.09 = 38,192.90/x
  3. Step 3: Cross multiply
    80,308.76x = 120,464.09 × 38,192.90
  4. Step 4: Simplify right side
    80,308.76x = 4,600,873,339.60
  5. Step 5: Solve for x
    x = 4,600,873,339.60/80,308.76
  6. Step 6: Final answer
    x = 57,289.81

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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.