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Finding the Fourth Proportional to 74,520.70, 111,536.70 and 40,734.96

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Solution

The fourth proportional to 74,520.70, 111,536.70 and 40,734.96 is: 60,968.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,520.70 : 111,536.70 = 40,734.96 : x
  2. Step 2: Convert to fraction form
    74,520.70/111,536.70 = 40,734.96/x
  3. Step 3: Cross multiply
    74,520.70x = 111,536.70 × 40,734.96
  4. Step 4: Simplify right side
    74,520.70x = 4,543,443,013.03
  5. Step 5: Solve for x
    x = 4,543,443,013.03/74,520.70
  6. Step 6: Final answer
    x = 60,968.87

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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.