Home / 90,514.18-135,738.87-31,333.96

Finding the Fourth Proportional to 90,514.18, 135,738.87 and 31,333.96

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Solution

The fourth proportional to 90,514.18, 135,738.87 and 31,333.96 is: 46,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,514.18 : 135,738.87 = 31,333.96 : x
  2. Step 2: Convert to fraction form
    90,514.18/135,738.87 = 31,333.96/x
  3. Step 3: Cross multiply
    90,514.18x = 135,738.87 × 31,333.96
  4. Step 4: Simplify right side
    90,514.18x = 4,253,236,323.03
  5. Step 5: Solve for x
    x = 4,253,236,323.03/90,514.18
  6. Step 6: Final answer
    x = 46,989.72

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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.