Home / 71,228.75-98,296.13-39,398.09

Finding the Fourth Proportional to 71,228.75, 98,296.13 and 39,398.09

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Solution

The fourth proportional to 71,228.75, 98,296.13 and 39,398.09 is: 54,369.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,228.75 : 98,296.13 = 39,398.09 : x
  2. Step 2: Convert to fraction form
    71,228.75/98,296.13 = 39,398.09/x
  3. Step 3: Cross multiply
    71,228.75x = 98,296.13 × 39,398.09
  4. Step 4: Simplify right side
    71,228.75x = 3,872,679,383.41
  5. Step 5: Solve for x
    x = 3,872,679,383.41/71,228.75
  6. Step 6: Final answer
    x = 54,369.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.