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Finding the Fourth Proportional to 80,015.92, 120,089.52 and 40,584.31

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Solution

The fourth proportional to 80,015.92, 120,089.52 and 40,584.31 is: 60,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,015.92 : 120,089.52 = 40,584.31 : x
  2. Step 2: Convert to fraction form
    80,015.92/120,089.52 = 40,584.31/x
  3. Step 3: Cross multiply
    80,015.92x = 120,089.52 × 40,584.31
  4. Step 4: Simplify right side
    80,015.92x = 4,873,750,007.21
  5. Step 5: Solve for x
    x = 4,873,750,007.21/80,015.92
  6. Step 6: Final answer
    x = 60,909.76

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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.