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Finding the Fourth Proportional to 115,711.84, 173,636.72 and 51,665

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Solution

The fourth proportional to 115,711.84, 173,636.72 and 51,665 is: 77,528.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,711.84 : 173,636.72 = 51,665 : x
  2. Step 2: Convert to fraction form
    115,711.84/173,636.72 = 51,665/x
  3. Step 3: Cross multiply
    115,711.84x = 173,636.72 × 51,665
  4. Step 4: Simplify right side
    115,711.84x = 8,970,940,880.48
  5. Step 5: Solve for x
    x = 8,970,940,880.48/115,711.84
  6. Step 6: Final answer
    x = 77,528.29

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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.