Home / 72,637.38-100,249.92-40,808.43

Finding the Fourth Proportional to 72,637.38, 100,249.92 and 40,808.43

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Solution

The fourth proportional to 72,637.38, 100,249.92 and 40,808.43 is: 56,321.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637.38 : 100,249.92 = 40,808.43 : x
  2. Step 2: Convert to fraction form
    72,637.38/100,249.92 = 40,808.43/x
  3. Step 3: Cross multiply
    72,637.38x = 100,249.92 × 40,808.43
  4. Step 4: Simplify right side
    72,637.38x = 4,091,041,842.83
  5. Step 5: Solve for x
    x = 4,091,041,842.83/72,637.38
  6. Step 6: Final answer
    x = 56,321.44

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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.