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Finding the Fourth Proportional to 74,516.70, 111,530.70 and 40,730.97

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Solution

The fourth proportional to 74,516.70, 111,530.70 and 40,730.97 is: 60,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,516.70 : 111,530.70 = 40,730.97 : x
  2. Step 2: Convert to fraction form
    74,516.70/111,530.70 = 40,730.97/x
  3. Step 3: Cross multiply
    74,516.70x = 111,530.70 × 40,730.97
  4. Step 4: Simplify right side
    74,516.70x = 4,542,753,595.78
  5. Step 5: Solve for x
    x = 4,542,753,595.78/74,516.70
  6. Step 6: Final answer
    x = 60,962.89

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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.