Home / 87,347.70-131,049.23-31,186.58

Finding the Fourth Proportional to 87,347.70, 131,049.23 and 31,186.58

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Solution

The fourth proportional to 87,347.70, 131,049.23 and 31,186.58 is: 46,789.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,347.70 : 131,049.23 = 31,186.58 : x
  2. Step 2: Convert to fraction form
    87,347.70/131,049.23 = 31,186.58/x
  3. Step 3: Cross multiply
    87,347.70x = 131,049.23 × 31,186.58
  4. Step 4: Simplify right side
    87,347.70x = 4,086,976,484.15
  5. Step 5: Solve for x
    x = 4,086,976,484.15/87,347.70
  6. Step 6: Final answer
    x = 46,789.74

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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.