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Finding the Fourth Proportional to 73,638.72, 110,471.85 and 40,340.43

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Solution

The fourth proportional to 73,638.72, 110,471.85 and 40,340.43 is: 60,518.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,638.72 : 110,471.85 = 40,340.43 : x
  2. Step 2: Convert to fraction form
    73,638.72/110,471.85 = 40,340.43/x
  3. Step 3: Cross multiply
    73,638.72x = 110,471.85 × 40,340.43
  4. Step 4: Simplify right side
    73,638.72x = 4,456,481,931.90
  5. Step 5: Solve for x
    x = 4,456,481,931.90/73,638.72
  6. Step 6: Final answer
    x = 60,518.19

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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.