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Finding the Fourth Proportional to 71,980.27, 107,958.10 and 19,377.45

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Solution

The fourth proportional to 71,980.27, 107,958.10 and 19,377.45 is: 29,062.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,980.27 : 107,958.10 = 19,377.45 : x
  2. Step 2: Convert to fraction form
    71,980.27/107,958.10 = 19,377.45/x
  3. Step 3: Cross multiply
    71,980.27x = 107,958.10 × 19,377.45
  4. Step 4: Simplify right side
    71,980.27x = 2,091,952,684.85
  5. Step 5: Solve for x
    x = 2,091,952,684.85/71,980.27
  6. Step 6: Final answer
    x = 29,062.86

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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.