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Finding the Fourth Proportional to 45,530.80, 68,305.80 and 14,369.20

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Solution

The fourth proportional to 45,530.80, 68,305.80 and 14,369.20 is: 21,556.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,530.80 : 68,305.80 = 14,369.20 : x
  2. Step 2: Convert to fraction form
    45,530.80/68,305.80 = 14,369.20/x
  3. Step 3: Cross multiply
    45,530.80x = 68,305.80 × 14,369.20
  4. Step 4: Simplify right side
    45,530.80x = 981,499,701.36
  5. Step 5: Solve for x
    x = 981,499,701.36/45,530.80
  6. Step 6: Final answer
    x = 21,556.83

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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.