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Finding the Fourth Proportional to 39,857, 55,007.94 and 25,750.88

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Solution

The fourth proportional to 39,857, 55,007.94 and 25,750.88 is: 35,539.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857 : 55,007.94 = 25,750.88 : x
  2. Step 2: Convert to fraction form
    39,857/55,007.94 = 25,750.88/x
  3. Step 3: Cross multiply
    39,857x = 55,007.94 × 25,750.88
  4. Step 4: Simplify right side
    39,857x = 1,416,502,861.99
  5. Step 5: Solve for x
    x = 1,416,502,861.99/39,857
  6. Step 6: Final answer
    x = 35,539.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.