Home / 84,147.10-126,183.72-31,519.66

Finding the Fourth Proportional to 84,147.10, 126,183.72 and 31,519.66

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Solution

The fourth proportional to 84,147.10, 126,183.72 and 31,519.66 is: 47,265.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,147.10 : 126,183.72 = 31,519.66 : x
  2. Step 2: Convert to fraction form
    84,147.10/126,183.72 = 31,519.66/x
  3. Step 3: Cross multiply
    84,147.10x = 126,183.72 × 31,519.66
  4. Step 4: Simplify right side
    84,147.10x = 3,977,267,951.94
  5. Step 5: Solve for x
    x = 3,977,267,951.94/84,147.10
  6. Step 6: Final answer
    x = 47,265.66

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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.