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Finding the Fourth Proportional to 73,129.79, 109,694.67 and 17,725.79

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Solution

The fourth proportional to 73,129.79, 109,694.67 and 17,725.79 is: 26,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,129.79 : 109,694.67 = 17,725.79 : x
  2. Step 2: Convert to fraction form
    73,129.79/109,694.67 = 17,725.79/x
  3. Step 3: Cross multiply
    73,129.79x = 109,694.67 × 17,725.79
  4. Step 4: Simplify right side
    73,129.79x = 1,944,424,136.07
  5. Step 5: Solve for x
    x = 1,944,424,136.07/73,129.79
  6. Step 6: Final answer
    x = 26,588.68

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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.