Home / 90,932.75-136,399.39-31,768.43

Finding the Fourth Proportional to 90,932.75, 136,399.39 and 31,768.43

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Solution

The fourth proportional to 90,932.75, 136,399.39 and 31,768.43 is: 47,652.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,932.75 : 136,399.39 = 31,768.43 : x
  2. Step 2: Convert to fraction form
    90,932.75/136,399.39 = 31,768.43/x
  3. Step 3: Cross multiply
    90,932.75x = 136,399.39 × 31,768.43
  4. Step 4: Simplify right side
    90,932.75x = 4,333,193,890.54
  5. Step 5: Solve for x
    x = 4,333,193,890.54/90,932.75
  6. Step 6: Final answer
    x = 47,652.73

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1.5x scale

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.