Home / 84,220.66-126,336.21-28,065.79

Finding the Fourth Proportional to 84,220.66, 126,336.21 and 28,065.79

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Solution

The fourth proportional to 84,220.66, 126,336.21 and 28,065.79 is: 42,100.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,220.66 : 126,336.21 = 28,065.79 : x
  2. Step 2: Convert to fraction form
    84,220.66/126,336.21 = 28,065.79/x
  3. Step 3: Cross multiply
    84,220.66x = 126,336.21 × 28,065.79
  4. Step 4: Simplify right side
    84,220.66x = 3,545,725,591.93
  5. Step 5: Solve for x
    x = 3,545,725,591.93/84,220.66
  6. Step 6: Final answer
    x = 42,100.42

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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.