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Finding the Fourth Proportional to 69,991.30, 104,956.16 and 25,606.54

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Solution

The fourth proportional to 69,991.30, 104,956.16 and 25,606.54 is: 38,398.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,991.30 : 104,956.16 = 25,606.54 : x
  2. Step 2: Convert to fraction form
    69,991.30/104,956.16 = 25,606.54/x
  3. Step 3: Cross multiply
    69,991.30x = 104,956.16 × 25,606.54
  4. Step 4: Simplify right side
    69,991.30x = 2,687,564,109.29
  5. Step 5: Solve for x
    x = 2,687,564,109.29/69,991.30
  6. Step 6: Final answer
    x = 38,398.55

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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.