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Finding the Fourth Proportional to 45,324.80, 67,920.80 and 40,644.80

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Solution

The fourth proportional to 45,324.80, 67,920.80 and 40,644.80 is: 60,907.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,324.80 : 67,920.80 = 40,644.80 : x
  2. Step 2: Convert to fraction form
    45,324.80/67,920.80 = 40,644.80/x
  3. Step 3: Cross multiply
    45,324.80x = 67,920.80 × 40,644.80
  4. Step 4: Simplify right side
    45,324.80x = 2,760,627,331.84
  5. Step 5: Solve for x
    x = 2,760,627,331.84/45,324.80
  6. Step 6: Final answer
    x = 60,907.66

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1.5x scale

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.