Home / 71,125.72-106,687.20-21,239.62

Finding the Fourth Proportional to 71,125.72, 106,687.20 and 21,239.62

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Solution

The fourth proportional to 71,125.72, 106,687.20 and 21,239.62 is: 31,859.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,125.72 : 106,687.20 = 21,239.62 : x
  2. Step 2: Convert to fraction form
    71,125.72/106,687.20 = 21,239.62/x
  3. Step 3: Cross multiply
    71,125.72x = 106,687.20 × 21,239.62
  4. Step 4: Simplify right side
    71,125.72x = 2,265,995,586.86
  5. Step 5: Solve for x
    x = 2,265,995,586.86/71,125.72
  6. Step 6: Final answer
    x = 31,859.02

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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.