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Finding the Fourth Proportional to 49,794.40, 74,720.40 and 18,632.80

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Solution

The fourth proportional to 49,794.40, 74,720.40 and 18,632.80 is: 27,959.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,794.40 : 74,720.40 = 18,632.80 : x
  2. Step 2: Convert to fraction form
    49,794.40/74,720.40 = 18,632.80/x
  3. Step 3: Cross multiply
    49,794.40x = 74,720.40 × 18,632.80
  4. Step 4: Simplify right side
    49,794.40x = 1,392,250,269.12
  5. Step 5: Solve for x
    x = 1,392,250,269.12/49,794.40
  6. Step 6: Final answer
    x = 27,959.98

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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.