Home / 90,704.96-136,049.76-31,530.56

Finding the Fourth Proportional to 90,704.96, 136,049.76 and 31,530.56

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Solution

The fourth proportional to 90,704.96, 136,049.76 and 31,530.56 is: 47,293.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,704.96 : 136,049.76 = 31,530.56 : x
  2. Step 2: Convert to fraction form
    90,704.96/136,049.76 = 31,530.56/x
  3. Step 3: Cross multiply
    90,704.96x = 136,049.76 × 31,530.56
  4. Step 4: Simplify right side
    90,704.96x = 4,289,725,120.67
  5. Step 5: Solve for x
    x = 4,289,725,120.67/90,704.96
  6. Step 6: Final answer
    x = 47,293.17

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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.