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Finding the Fourth Proportional to 40,286.80, 60,451.80 and 16,915.60

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Solution

The fourth proportional to 40,286.80, 60,451.80 and 16,915.60 is: 25,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,286.80 : 60,451.80 = 16,915.60 : x
  2. Step 2: Convert to fraction form
    40,286.80/60,451.80 = 16,915.60/x
  3. Step 3: Cross multiply
    40,286.80x = 60,451.80 × 16,915.60
  4. Step 4: Simplify right side
    40,286.80x = 1,022,578,468.08
  5. Step 5: Solve for x
    x = 1,022,578,468.08/40,286.80
  6. Step 6: Final answer
    x = 25,382.47

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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.