Home / 84,131.52-126,179.40-31,544.88

Finding the Fourth Proportional to 84,131.52, 126,179.40 and 31,544.88

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Solution

The fourth proportional to 84,131.52, 126,179.40 and 31,544.88 is: 47,310.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,131.52 : 126,179.40 = 31,544.88 : x
  2. Step 2: Convert to fraction form
    84,131.52/126,179.40 = 31,544.88/x
  3. Step 3: Cross multiply
    84,131.52x = 126,179.40 × 31,544.88
  4. Step 4: Simplify right side
    84,131.52x = 3,980,314,031.47
  5. Step 5: Solve for x
    x = 3,980,314,031.47/84,131.52
  6. Step 6: Final answer
    x = 47,310.62

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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.