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Finding the Fourth Proportional to 49,663.50, 74,494.65 and 20,081.10

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Solution

The fourth proportional to 49,663.50, 74,494.65 and 20,081.10 is: 30,121.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,663.50 : 74,494.65 = 20,081.10 : x
  2. Step 2: Convert to fraction form
    49,663.50/74,494.65 = 20,081.10/x
  3. Step 3: Cross multiply
    49,663.50x = 74,494.65 × 20,081.10
  4. Step 4: Simplify right side
    49,663.50x = 1,495,934,516.12
  5. Step 5: Solve for x
    x = 1,495,934,516.12/49,663.50
  6. Step 6: Final answer
    x = 30,121.41

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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.