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Finding the Fourth Proportional to 33,480.29, 50,220.20 and 8,520

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Solution

The fourth proportional to 33,480.29, 50,220.20 and 8,520 is: 12,779.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,480.29 : 50,220.20 = 8,520 : x
  2. Step 2: Convert to fraction form
    33,480.29/50,220.20 = 8,520/x
  3. Step 3: Cross multiply
    33,480.29x = 50,220.20 × 8,520
  4. Step 4: Simplify right side
    33,480.29x = 427,876,061.40
  5. Step 5: Solve for x
    x = 427,876,061.40/33,480.29
  6. Step 6: Final answer
    x = 12,779.94

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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.