Home / 90,382.11-135,635.76-31,218.27

Finding the Fourth Proportional to 90,382.11, 135,635.76 and 31,218.27

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Solution

The fourth proportional to 90,382.11, 135,635.76 and 31,218.27 is: 46,849.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,382.11 : 135,635.76 = 31,218.27 : x
  2. Step 2: Convert to fraction form
    90,382.11/135,635.76 = 31,218.27/x
  3. Step 3: Cross multiply
    90,382.11x = 135,635.76 × 31,218.27
  4. Step 4: Simplify right side
    90,382.11x = 4,234,313,777.34
  5. Step 5: Solve for x
    x = 4,234,313,777.34/90,382.11
  6. Step 6: Final answer
    x = 46,849.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.