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Finding the Fourth Proportional to 71,960.81, 107,941.21 and 19,375.61

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Solution

The fourth proportional to 71,960.81, 107,941.21 and 19,375.61 is: 29,063.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,960.81 : 107,941.21 = 19,375.61 : x
  2. Step 2: Convert to fraction form
    71,960.81/107,941.21 = 19,375.61/x
  3. Step 3: Cross multiply
    71,960.81x = 107,941.21 × 19,375.61
  4. Step 4: Simplify right side
    71,960.81x = 2,091,426,199.74
  5. Step 5: Solve for x
    x = 2,091,426,199.74/71,960.81
  6. Step 6: Final answer
    x = 29,063.41

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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.