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Finding the Fourth Proportional to 45,390.90, 67,954.80 and 40,582.82

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Solution

The fourth proportional to 45,390.90, 67,954.80 and 40,582.82 is: 60,756.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,390.90 : 67,954.80 = 40,582.82 : x
  2. Step 2: Convert to fraction form
    45,390.90/67,954.80 = 40,582.82/x
  3. Step 3: Cross multiply
    45,390.90x = 67,954.80 × 40,582.82
  4. Step 4: Simplify right side
    45,390.90x = 2,757,797,076.76
  5. Step 5: Solve for x
    x = 2,757,797,076.76/45,390.90
  6. Step 6: Final answer
    x = 60,756.61

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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.