Home / 72,201.11-99,635.87-40,372.97

Finding the Fourth Proportional to 72,201.11, 99,635.87 and 40,372.97

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Solution

The fourth proportional to 72,201.11, 99,635.87 and 40,372.97 is: 55,713.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,201.11 : 99,635.87 = 40,372.97 : x
  2. Step 2: Convert to fraction form
    72,201.11/99,635.87 = 40,372.97/x
  3. Step 3: Cross multiply
    72,201.11x = 99,635.87 × 40,372.97
  4. Step 4: Simplify right side
    72,201.11x = 4,022,595,593.19
  5. Step 5: Solve for x
    x = 4,022,595,593.19/72,201.11
  6. Step 6: Final answer
    x = 55,713.77

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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.