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Finding the Fourth Proportional to 53,168.88, 79,767.15 and 19,891.54

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Solution

The fourth proportional to 53,168.88, 79,767.15 and 19,891.54 is: 29,842.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,168.88 : 79,767.15 = 19,891.54 : x
  2. Step 2: Convert to fraction form
    53,168.88/79,767.15 = 19,891.54/x
  3. Step 3: Cross multiply
    53,168.88x = 79,767.15 × 19,891.54
  4. Step 4: Simplify right side
    53,168.88x = 1,586,691,454.91
  5. Step 5: Solve for x
    x = 1,586,691,454.91/53,168.88
  6. Step 6: Final answer
    x = 29,842.48

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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.