Home / 84,290.12-126,453.67-31,699.61

Finding the Fourth Proportional to 84,290.12, 126,453.67 and 31,699.61

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Solution

The fourth proportional to 84,290.12, 126,453.67 and 31,699.61 is: 47,556.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,290.12 : 126,453.67 = 31,699.61 : x
  2. Step 2: Convert to fraction form
    84,290.12/126,453.67 = 31,699.61/x
  3. Step 3: Cross multiply
    84,290.12x = 126,453.67 × 31,699.61
  4. Step 4: Simplify right side
    84,290.12x = 4,008,532,258.95
  5. Step 5: Solve for x
    x = 4,008,532,258.95/84,290.12
  6. Step 6: Final answer
    x = 47,556.37

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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.