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Finding the Fourth Proportional to 71,057.33, 106,523.25 and 28,972.61

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Solution

The fourth proportional to 71,057.33, 106,523.25 and 28,972.61 is: 43,433.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,057.33 : 106,523.25 = 28,972.61 : x
  2. Step 2: Convert to fraction form
    71,057.33/106,523.25 = 28,972.61/x
  3. Step 3: Cross multiply
    71,057.33x = 106,523.25 × 28,972.61
  4. Step 4: Simplify right side
    71,057.33x = 3,086,256,045.57
  5. Step 5: Solve for x
    x = 3,086,256,045.57/71,057.33
  6. Step 6: Final answer
    x = 43,433.33

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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.