Home / 84,306.06-126,464.82-28,143.90

Finding the Fourth Proportional to 84,306.06, 126,464.82 and 28,143.90

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Solution

The fourth proportional to 84,306.06, 126,464.82 and 28,143.90 is: 42,217.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,306.06 : 126,464.82 = 28,143.90 : x
  2. Step 2: Convert to fraction form
    84,306.06/126,464.82 = 28,143.90/x
  3. Step 3: Cross multiply
    84,306.06x = 126,464.82 × 28,143.90
  4. Step 4: Simplify right side
    84,306.06x = 3,559,213,247.60
  5. Step 5: Solve for x
    x = 3,559,213,247.60/84,306.06
  6. Step 6: Final answer
    x = 42,217.76

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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.