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Finding the Fourth Proportional to 29,863.20, 44,809.20 and 21,079.20

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Solution

The fourth proportional to 29,863.20, 44,809.20 and 21,079.20 is: 31,628.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,863.20 : 44,809.20 = 21,079.20 : x
  2. Step 2: Convert to fraction form
    29,863.20/44,809.20 = 21,079.20/x
  3. Step 3: Cross multiply
    29,863.20x = 44,809.20 × 21,079.20
  4. Step 4: Simplify right side
    29,863.20x = 944,542,088.64
  5. Step 5: Solve for x
    x = 944,542,088.64/29,863.20
  6. Step 6: Final answer
    x = 31,628.96

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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.