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Finding the Fourth Proportional to 45,911.40, 68,751.90 and 30,244.20

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Solution

The fourth proportional to 45,911.40, 68,751.90 and 30,244.20 is: 45,290.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,911.40 : 68,751.90 = 30,244.20 : x
  2. Step 2: Convert to fraction form
    45,911.40/68,751.90 = 30,244.20/x
  3. Step 3: Cross multiply
    45,911.40x = 68,751.90 × 30,244.20
  4. Step 4: Simplify right side
    45,911.40x = 2,079,346,213.98
  5. Step 5: Solve for x
    x = 2,079,346,213.98/45,911.40
  6. Step 6: Final answer
    x = 45,290.41

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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.