Home / 72,601.20-100,176.96-40,330.64

Finding the Fourth Proportional to 72,601.20, 100,176.96 and 40,330.64

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Solution

The fourth proportional to 72,601.20, 100,176.96 and 40,330.64 is: 55,649.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,601.20 : 100,176.96 = 40,330.64 : x
  2. Step 2: Convert to fraction form
    72,601.20/100,176.96 = 40,330.64/x
  3. Step 3: Cross multiply
    72,601.20x = 100,176.96 × 40,330.64
  4. Step 4: Simplify right side
    72,601.20x = 4,040,200,910.05
  5. Step 5: Solve for x
    x = 4,040,200,910.05/72,601.20
  6. Step 6: Final answer
    x = 55,649.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.