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Finding the Fourth Proportional to 80,293.92, 120,405.96 and 42,845.70

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Solution

The fourth proportional to 80,293.92, 120,405.96 and 42,845.70 is: 64,249.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,293.92 : 120,405.96 = 42,845.70 : x
  2. Step 2: Convert to fraction form
    80,293.92/120,405.96 = 42,845.70/x
  3. Step 3: Cross multiply
    80,293.92x = 120,405.96 × 42,845.70
  4. Step 4: Simplify right side
    80,293.92x = 5,158,877,640.37
  5. Step 5: Solve for x
    x = 5,158,877,640.37/80,293.92
  6. Step 6: Final answer
    x = 64,249.92

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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.