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Finding the Fourth Proportional to 84,556.70, 126,756.60 and 31,219.22

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Solution

The fourth proportional to 84,556.70, 126,756.60 and 31,219.22 is: 46,799.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,556.70 : 126,756.60 = 31,219.22 : x
  2. Step 2: Convert to fraction form
    84,556.70/126,756.60 = 31,219.22/x
  3. Step 3: Cross multiply
    84,556.70x = 126,756.60 × 31,219.22
  4. Step 4: Simplify right side
    84,556.70x = 3,957,242,181.85
  5. Step 5: Solve for x
    x = 3,957,242,181.85/84,556.70
  6. Step 6: Final answer
    x = 46,799.87

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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.