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Finding the Fourth Proportional to 40,608.20, 60,918.02 and 12,530.54

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Solution

The fourth proportional to 40,608.20, 60,918.02 and 12,530.54 is: 18,797.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,608.20 : 60,918.02 = 12,530.54 : x
  2. Step 2: Convert to fraction form
    40,608.20/60,918.02 = 12,530.54/x
  3. Step 3: Cross multiply
    40,608.20x = 60,918.02 × 12,530.54
  4. Step 4: Simplify right side
    40,608.20x = 763,335,686.33
  5. Step 5: Solve for x
    x = 763,335,686.33/40,608.20
  6. Step 6: Final answer
    x = 18,797.58

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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.