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Finding the Fourth Proportional to 115,286.65, 172,935.27 and 35,318.88

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Solution

The fourth proportional to 115,286.65, 172,935.27 and 35,318.88 is: 52,979.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,286.65 : 172,935.27 = 35,318.88 : x
  2. Step 2: Convert to fraction form
    115,286.65/172,935.27 = 35,318.88/x
  3. Step 3: Cross multiply
    115,286.65x = 172,935.27 × 35,318.88
  4. Step 4: Simplify right side
    115,286.65x = 6,107,880,048.90
  5. Step 5: Solve for x
    x = 6,107,880,048.90/115,286.65
  6. Step 6: Final answer
    x = 52,979.94

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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.