Home / 72,067.68-99,441.54-40,231.44

Finding the Fourth Proportional to 72,067.68, 99,441.54 and 40,231.44

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Solution

The fourth proportional to 72,067.68, 99,441.54 and 40,231.44 is: 55,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,067.68 : 99,441.54 = 40,231.44 : x
  2. Step 2: Convert to fraction form
    72,067.68/99,441.54 = 40,231.44/x
  3. Step 3: Cross multiply
    72,067.68x = 99,441.54 × 40,231.44
  4. Step 4: Simplify right side
    72,067.68x = 4,000,676,350.02
  5. Step 5: Solve for x
    x = 4,000,676,350.02/72,067.68
  6. Step 6: Final answer
    x = 55,512.77

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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.