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Finding the Fourth Proportional to 80,412.90, 120,619.66 and 33,632.96

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Solution

The fourth proportional to 80,412.90, 120,619.66 and 33,632.96 is: 50,449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,412.90 : 120,619.66 = 33,632.96 : x
  2. Step 2: Convert to fraction form
    80,412.90/120,619.66 = 33,632.96/x
  3. Step 3: Cross multiply
    80,412.90x = 120,619.66 × 33,632.96
  4. Step 4: Simplify right side
    80,412.90x = 4,056,796,199.99
  5. Step 5: Solve for x
    x = 4,056,796,199.99/80,412.90
  6. Step 6: Final answer
    x = 50,449.57

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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.