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Finding the Fourth Proportional to 80,409.90, 120,615.16 and 33,629.96

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Solution

The fourth proportional to 80,409.90, 120,615.16 and 33,629.96 is: 50,445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,409.90 : 120,615.16 = 33,629.96 : x
  2. Step 2: Convert to fraction form
    80,409.90/120,615.16 = 33,629.96/x
  3. Step 3: Cross multiply
    80,409.90x = 120,615.16 × 33,629.96
  4. Step 4: Simplify right side
    80,409.90x = 4,056,283,006.19
  5. Step 5: Solve for x
    x = 4,056,283,006.19/80,409.90
  6. Step 6: Final answer
    x = 50,445.07

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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.