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Finding the Fourth Proportional to 71,387.88, 107,087.08 and 18,797

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Solution

The fourth proportional to 71,387.88, 107,087.08 and 18,797 is: 28,196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,387.88 : 107,087.08 = 18,797 : x
  2. Step 2: Convert to fraction form
    71,387.88/107,087.08 = 18,797/x
  3. Step 3: Cross multiply
    71,387.88x = 107,087.08 × 18,797
  4. Step 4: Simplify right side
    71,387.88x = 2,012,915,842.76
  5. Step 5: Solve for x
    x = 2,012,915,842.76/71,387.88
  6. Step 6: Final answer
    x = 28,196.89

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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.