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Finding the Fourth Proportional to 80,327.68, 120,411.84 and 38,133.60

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Solution

The fourth proportional to 80,327.68, 120,411.84 and 38,133.60 is: 57,162.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,327.68 : 120,411.84 = 38,133.60 : x
  2. Step 2: Convert to fraction form
    80,327.68/120,411.84 = 38,133.60/x
  3. Step 3: Cross multiply
    80,327.68x = 120,411.84 × 38,133.60
  4. Step 4: Simplify right side
    80,327.68x = 4,591,736,941.82
  5. Step 5: Solve for x
    x = 4,591,736,941.82/80,327.68
  6. Step 6: Final answer
    x = 57,162.57

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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.