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Finding the Fourth Proportional to 52,658.65, 72,668.92 and 28,785.42

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Solution

The fourth proportional to 52,658.65, 72,668.92 and 28,785.42 is: 39,723.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,658.65 : 72,668.92 = 28,785.42 : x
  2. Step 2: Convert to fraction form
    52,658.65/72,668.92 = 28,785.42/x
  3. Step 3: Cross multiply
    52,658.65x = 72,668.92 × 28,785.42
  4. Step 4: Simplify right side
    52,658.65x = 2,091,805,383.15
  5. Step 5: Solve for x
    x = 2,091,805,383.15/52,658.65
  6. Step 6: Final answer
    x = 39,723.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.