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Finding the Fourth Proportional to 45,772.40, 68,543.40 and 30,105.20

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Solution

The fourth proportional to 45,772.40, 68,543.40 and 30,105.20 is: 45,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,772.40 : 68,543.40 = 30,105.20 : x
  2. Step 2: Convert to fraction form
    45,772.40/68,543.40 = 30,105.20/x
  3. Step 3: Cross multiply
    45,772.40x = 68,543.40 × 30,105.20
  4. Step 4: Simplify right side
    45,772.40x = 2,063,512,765.68
  5. Step 5: Solve for x
    x = 2,063,512,765.68/45,772.40
  6. Step 6: Final answer
    x = 45,082.03

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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.