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Finding the Fourth Proportional to 36,006.75, 49,681.35 and 20,890.65

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Solution

The fourth proportional to 36,006.75, 49,681.35 and 20,890.65 is: 28,824.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,006.75 : 49,681.35 = 20,890.65 : x
  2. Step 2: Convert to fraction form
    36,006.75/49,681.35 = 20,890.65/x
  3. Step 3: Cross multiply
    36,006.75x = 49,681.35 × 20,890.65
  4. Step 4: Simplify right side
    36,006.75x = 1,037,875,694.38
  5. Step 5: Solve for x
    x = 1,037,875,694.38/36,006.75
  6. Step 6: Final answer
    x = 28,824.48

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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.