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Finding the Fourth Proportional to 57,880.20, 86,820.30 and 18,441.30

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Solution

The fourth proportional to 57,880.20, 86,820.30 and 18,441.30 is: 27,661.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,880.20 : 86,820.30 = 18,441.30 : x
  2. Step 2: Convert to fraction form
    57,880.20/86,820.30 = 18,441.30/x
  3. Step 3: Cross multiply
    57,880.20x = 86,820.30 × 18,441.30
  4. Step 4: Simplify right side
    57,880.20x = 1,601,079,198.39
  5. Step 5: Solve for x
    x = 1,601,079,198.39/57,880.20
  6. Step 6: Final answer
    x = 27,661.95

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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.