Home / 72,723.24-100,356.18-40,891.56

Finding the Fourth Proportional to 72,723.24, 100,356.18 and 40,891.56

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Solution

The fourth proportional to 72,723.24, 100,356.18 and 40,891.56 is: 56,429.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,723.24 : 100,356.18 = 40,891.56 : x
  2. Step 2: Convert to fraction form
    72,723.24/100,356.18 = 40,891.56/x
  3. Step 3: Cross multiply
    72,723.24x = 100,356.18 × 40,891.56
  4. Step 4: Simplify right side
    72,723.24x = 4,103,720,755.84
  5. Step 5: Solve for x
    x = 4,103,720,755.84/72,723.24
  6. Step 6: Final answer
    x = 56,429.29

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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.