Home / 80,440.96-120,727.80-40,471.24

Finding the Fourth Proportional to 80,440.96, 120,727.80 and 40,471.24

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Solution

The fourth proportional to 80,440.96, 120,727.80 and 40,471.24 is: 60,740.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,440.96 : 120,727.80 = 40,471.24 : x
  2. Step 2: Convert to fraction form
    80,440.96/120,727.80 = 40,471.24/x
  3. Step 3: Cross multiply
    80,440.96x = 120,727.80 × 40,471.24
  4. Step 4: Simplify right side
    80,440.96x = 4,886,003,768.47
  5. Step 5: Solve for x
    x = 4,886,003,768.47/80,440.96
  6. Step 6: Final answer
    x = 60,740.25

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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.