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Finding the Fourth Proportional to 75,286.57, 112,732.57 and 52,979.17

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Solution

The fourth proportional to 75,286.57, 112,732.57 and 52,979.17 is: 79,329.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,286.57 : 112,732.57 = 52,979.17 : x
  2. Step 2: Convert to fraction form
    75,286.57/112,732.57 = 52,979.17/x
  3. Step 3: Cross multiply
    75,286.57x = 112,732.57 × 52,979.17
  4. Step 4: Simplify right side
    75,286.57x = 5,972,477,990.57
  5. Step 5: Solve for x
    x = 5,972,477,990.57/75,286.57
  6. Step 6: Final answer
    x = 79,329.93

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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.