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Finding the Fourth Proportional to 30,049.52, 45,080.72 and 8,991.20

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Solution

The fourth proportional to 30,049.52, 45,080.72 and 8,991.20 is: 13,488.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,049.52 : 45,080.72 = 8,991.20 : x
  2. Step 2: Convert to fraction form
    30,049.52/45,080.72 = 8,991.20/x
  3. Step 3: Cross multiply
    30,049.52x = 45,080.72 × 8,991.20
  4. Step 4: Simplify right side
    30,049.52x = 405,329,769.66
  5. Step 5: Solve for x
    x = 405,329,769.66/30,049.52
  6. Step 6: Final answer
    x = 13,488.73

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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.