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Finding the Fourth Proportional to 29,821.20, 44,737.80 and 8,761.20

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Solution

The fourth proportional to 29,821.20, 44,737.80 and 8,761.20 is: 13,143.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,821.20 : 44,737.80 = 8,761.20 : x
  2. Step 2: Convert to fraction form
    29,821.20/44,737.80 = 8,761.20/x
  3. Step 3: Cross multiply
    29,821.20x = 44,737.80 × 8,761.20
  4. Step 4: Simplify right side
    29,821.20x = 391,956,813.36
  5. Step 5: Solve for x
    x = 391,956,813.36/29,821.20
  6. Step 6: Final answer
    x = 13,143.56

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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.