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Finding the Fourth Proportional to 69,388.80, 104,044.80 and 29,939.20

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Solution

The fourth proportional to 69,388.80, 104,044.80 and 29,939.20 is: 44,892.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,388.80 : 104,044.80 = 29,939.20 : x
  2. Step 2: Convert to fraction form
    69,388.80/104,044.80 = 29,939.20/x
  3. Step 3: Cross multiply
    69,388.80x = 104,044.80 × 29,939.20
  4. Step 4: Simplify right side
    69,388.80x = 3,115,018,076.16
  5. Step 5: Solve for x
    x = 3,115,018,076.16/69,388.80
  6. Step 6: Final answer
    x = 44,892.23

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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.