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Finding the Fourth Proportional to 71,859.15, 107,839.76 and 25,112.43

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Solution

The fourth proportional to 71,859.15, 107,839.76 and 25,112.43 is: 37,686.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,859.15 : 107,839.76 = 25,112.43 : x
  2. Step 2: Convert to fraction form
    71,859.15/107,839.76 = 25,112.43/x
  3. Step 3: Cross multiply
    71,859.15x = 107,839.76 × 25,112.43
  4. Step 4: Simplify right side
    71,859.15x = 2,708,118,298.65
  5. Step 5: Solve for x
    x = 2,708,118,298.65/71,859.15
  6. Step 6: Final answer
    x = 37,686.48

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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.