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Finding the Fourth Proportional to 71,588.98, 107,375.13 and 19,002.55

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Solution

The fourth proportional to 71,588.98, 107,375.13 and 19,002.55 is: 28,501.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,588.98 : 107,375.13 = 19,002.55 : x
  2. Step 2: Convert to fraction form
    71,588.98/107,375.13 = 19,002.55/x
  3. Step 3: Cross multiply
    71,588.98x = 107,375.13 × 19,002.55
  4. Step 4: Simplify right side
    71,588.98x = 2,040,401,276.58
  5. Step 5: Solve for x
    x = 2,040,401,276.58/71,588.98
  6. Step 6: Final answer
    x = 28,501.61

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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.