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Finding the Fourth Proportional to 34,176.80, 51,249.80 and 14,445.20

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Solution

The fourth proportional to 34,176.80, 51,249.80 and 14,445.20 is: 21,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,176.80 : 51,249.80 = 14,445.20 : x
  2. Step 2: Convert to fraction form
    34,176.80/51,249.80 = 14,445.20/x
  3. Step 3: Cross multiply
    34,176.80x = 51,249.80 × 14,445.20
  4. Step 4: Simplify right side
    34,176.80x = 740,313,610.96
  5. Step 5: Solve for x
    x = 740,313,610.96/34,176.80
  6. Step 6: Final answer
    x = 21,661.29

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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.