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Finding the Fourth Proportional to 43,608.20, 65,485.20 and 28,882.40

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Solution

The fourth proportional to 43,608.20, 65,485.20 and 28,882.40 is: 43,371.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,608.20 : 65,485.20 = 28,882.40 : x
  2. Step 2: Convert to fraction form
    43,608.20/65,485.20 = 28,882.40/x
  3. Step 3: Cross multiply
    43,608.20x = 65,485.20 × 28,882.40
  4. Step 4: Simplify right side
    43,608.20x = 1,891,369,740.48
  5. Step 5: Solve for x
    x = 1,891,369,740.48/43,608.20
  6. Step 6: Final answer
    x = 43,371.88

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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.