Home / 90,284.70-135,634.68-63,691.86

Finding the Fourth Proportional to 90,284.70, 135,634.68 and 63,691.86

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Solution

The fourth proportional to 90,284.70, 135,634.68 and 63,691.86 is: 95,684.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,284.70 : 135,634.68 = 63,691.86 : x
  2. Step 2: Convert to fraction form
    90,284.70/135,634.68 = 63,691.86/x
  3. Step 3: Cross multiply
    90,284.70x = 135,634.68 × 63,691.86
  4. Step 4: Simplify right side
    90,284.70x = 8,638,825,049.70
  5. Step 5: Solve for x
    x = 8,638,825,049.70/90,284.70
  6. Step 6: Final answer
    x = 95,684.26

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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.