Home / 72,198.88-99,637.62-40,367.80

Finding the Fourth Proportional to 72,198.88, 99,637.62 and 40,367.80

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Solution

The fourth proportional to 72,198.88, 99,637.62 and 40,367.80 is: 55,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,198.88 : 99,637.62 = 40,367.80 : x
  2. Step 2: Convert to fraction form
    72,198.88/99,637.62 = 40,367.80/x
  3. Step 3: Cross multiply
    72,198.88x = 99,637.62 × 40,367.80
  4. Step 4: Simplify right side
    72,198.88x = 4,022,151,516.64
  5. Step 5: Solve for x
    x = 4,022,151,516.64/72,198.88
  6. Step 6: Final answer
    x = 55,709.33

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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.