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Finding the Fourth Proportional to 69,979.29, 104,950.49 and 25,606.43

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Solution

The fourth proportional to 69,979.29, 104,950.49 and 25,606.43 is: 38,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,979.29 : 104,950.49 = 25,606.43 : x
  2. Step 2: Convert to fraction form
    69,979.29/104,950.49 = 25,606.43/x
  3. Step 3: Cross multiply
    69,979.29x = 104,950.49 × 25,606.43
  4. Step 4: Simplify right side
    69,979.29x = 2,687,407,116.43
  5. Step 5: Solve for x
    x = 2,687,407,116.43/69,979.29
  6. Step 6: Final answer
    x = 38,402.89

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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.