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Finding the Fourth Proportional to 30,049.60, 45,082.20 and 8,990.08

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Solution

The fourth proportional to 30,049.60, 45,082.20 and 8,990.08 is: 13,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,049.60 : 45,082.20 = 8,990.08 : x
  2. Step 2: Convert to fraction form
    30,049.60/45,082.20 = 8,990.08/x
  3. Step 3: Cross multiply
    30,049.60x = 45,082.20 × 8,990.08
  4. Step 4: Simplify right side
    30,049.60x = 405,292,584.58
  5. Step 5: Solve for x
    x = 405,292,584.58/30,049.60
  6. Step 6: Final answer
    x = 13,487.45

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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.