Home / 84,020.52-126,033.21-31,419.96

Finding the Fourth Proportional to 84,020.52, 126,033.21 and 31,419.96

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Solution

The fourth proportional to 84,020.52, 126,033.21 and 31,419.96 is: 47,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,020.52 : 126,033.21 = 31,419.96 : x
  2. Step 2: Convert to fraction form
    84,020.52/126,033.21 = 31,419.96/x
  3. Step 3: Cross multiply
    84,020.52x = 126,033.21 × 31,419.96
  4. Step 4: Simplify right side
    84,020.52x = 3,959,958,416.87
  5. Step 5: Solve for x
    x = 3,959,958,416.87/84,020.52
  6. Step 6: Final answer
    x = 47,130.85

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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.