Home / 90,466.56-135,713.20-31,286.34

Finding the Fourth Proportional to 90,466.56, 135,713.20 and 31,286.34

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Solution

The fourth proportional to 90,466.56, 135,713.20 and 31,286.34 is: 46,934.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,466.56 : 135,713.20 = 31,286.34 : x
  2. Step 2: Convert to fraction form
    90,466.56/135,713.20 = 31,286.34/x
  3. Step 3: Cross multiply
    90,466.56x = 135,713.20 × 31,286.34
  4. Step 4: Simplify right side
    90,466.56x = 4,245,969,317.69
  5. Step 5: Solve for x
    x = 4,245,969,317.69/90,466.56
  6. Step 6: Final answer
    x = 46,934.13

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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.