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Finding the Fourth Proportional to 71,811.64, 107,668.86 and 25,039

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Solution

The fourth proportional to 71,811.64, 107,668.86 and 25,039 is: 37,541.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,811.64 : 107,668.86 = 25,039 : x
  2. Step 2: Convert to fraction form
    71,811.64/107,668.86 = 25,039/x
  3. Step 3: Cross multiply
    71,811.64x = 107,668.86 × 25,039
  4. Step 4: Simplify right side
    71,811.64x = 2,695,920,585.54
  5. Step 5: Solve for x
    x = 2,695,920,585.54/71,811.64
  6. Step 6: Final answer
    x = 37,541.55

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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.