Home / 84,394.20-126,565.76-28,219.88

Finding the Fourth Proportional to 84,394.20, 126,565.76 and 28,219.88

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Solution

The fourth proportional to 84,394.20, 126,565.76 and 28,219.88 is: 42,321.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,394.20 : 126,565.76 = 28,219.88 : x
  2. Step 2: Convert to fraction form
    84,394.20/126,565.76 = 28,219.88/x
  3. Step 3: Cross multiply
    84,394.20x = 126,565.76 × 28,219.88
  4. Step 4: Simplify right side
    84,394.20x = 3,571,670,559.31
  5. Step 5: Solve for x
    x = 3,571,670,559.31/84,394.20
  6. Step 6: Final answer
    x = 42,321.28

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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.