Home / 84,326.88-126,503.28-28,149.60

Finding the Fourth Proportional to 84,326.88, 126,503.28 and 28,149.60

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Solution

The fourth proportional to 84,326.88, 126,503.28 and 28,149.60 is: 42,228.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,326.88 : 126,503.28 = 28,149.60 : x
  2. Step 2: Convert to fraction form
    84,326.88/126,503.28 = 28,149.60/x
  3. Step 3: Cross multiply
    84,326.88x = 126,503.28 × 28,149.60
  4. Step 4: Simplify right side
    84,326.88x = 3,561,016,730.69
  5. Step 5: Solve for x
    x = 3,561,016,730.69/84,326.88
  6. Step 6: Final answer
    x = 42,228.73

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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.