Home / 90,141.35-135,234.17-30,977.87

Finding the Fourth Proportional to 90,141.35, 135,234.17 and 30,977.87

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Solution

The fourth proportional to 90,141.35, 135,234.17 and 30,977.87 is: 46,474.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,141.35 : 135,234.17 = 30,977.87 : x
  2. Step 2: Convert to fraction form
    90,141.35/135,234.17 = 30,977.87/x
  3. Step 3: Cross multiply
    90,141.35x = 135,234.17 × 30,977.87
  4. Step 4: Simplify right side
    90,141.35x = 4,189,266,382.93
  5. Step 5: Solve for x
    x = 4,189,266,382.93/90,141.35
  6. Step 6: Final answer
    x = 46,474.41

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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.