Home / 84,217.36-126,339-28,038.20

Finding the Fourth Proportional to 84,217.36, 126,339 and 28,038.20

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Solution

The fourth proportional to 84,217.36, 126,339 and 28,038.20 is: 42,061.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,217.36 : 126,339 = 28,038.20 : x
  2. Step 2: Convert to fraction form
    84,217.36/126,339 = 28,038.20/x
  3. Step 3: Cross multiply
    84,217.36x = 126,339 × 28,038.20
  4. Step 4: Simplify right side
    84,217.36x = 3,542,318,149.80
  5. Step 5: Solve for x
    x = 3,542,318,149.80/84,217.36
  6. Step 6: Final answer
    x = 42,061.61

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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.