Home / 71,142.28-106,717.38-31,702.12

Finding the Fourth Proportional to 71,142.28, 106,717.38 and 31,702.12

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Solution

The fourth proportional to 71,142.28, 106,717.38 and 31,702.12 is: 47,554.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,142.28 : 106,717.38 = 31,702.12 : x
  2. Step 2: Convert to fraction form
    71,142.28/106,717.38 = 31,702.12/x
  3. Step 3: Cross multiply
    71,142.28x = 106,717.38 × 31,702.12
  4. Step 4: Simplify right side
    71,142.28x = 3,383,167,186.85
  5. Step 5: Solve for x
    x = 3,383,167,186.85/71,142.28
  6. Step 6: Final answer
    x = 47,554.94

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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.