Home / 71,223.39-98,286.57-39,391.61

Finding the Fourth Proportional to 71,223.39, 98,286.57 and 39,391.61

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Solution

The fourth proportional to 71,223.39, 98,286.57 and 39,391.61 is: 54,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,223.39 : 98,286.57 = 39,391.61 : x
  2. Step 2: Convert to fraction form
    71,223.39/98,286.57 = 39,391.61/x
  3. Step 3: Cross multiply
    71,223.39x = 98,286.57 × 39,391.61
  4. Step 4: Simplify right side
    71,223.39x = 3,871,665,742.24
  5. Step 5: Solve for x
    x = 3,871,665,742.24/71,223.39
  6. Step 6: Final answer
    x = 54,359.47

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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.