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Finding the Fourth Proportional to 53,286.88, 79,872.56 and 26,288

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Solution

The fourth proportional to 53,286.88, 79,872.56 and 26,288 is: 39,403.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,286.88 : 79,872.56 = 26,288 : x
  2. Step 2: Convert to fraction form
    53,286.88/79,872.56 = 26,288/x
  3. Step 3: Cross multiply
    53,286.88x = 79,872.56 × 26,288
  4. Step 4: Simplify right side
    53,286.88x = 2,099,689,857.28
  5. Step 5: Solve for x
    x = 2,099,689,857.28/53,286.88
  6. Step 6: Final answer
    x = 39,403.51

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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.