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Finding the Fourth Proportional to 69,089.01, 103,633.13 and 19,168.59

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Solution

The fourth proportional to 69,089.01, 103,633.13 and 19,168.59 is: 28,752.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,089.01 : 103,633.13 = 19,168.59 : x
  2. Step 2: Convert to fraction form
    69,089.01/103,633.13 = 19,168.59/x
  3. Step 3: Cross multiply
    69,089.01x = 103,633.13 × 19,168.59
  4. Step 4: Simplify right side
    69,089.01x = 1,986,500,883.54
  5. Step 5: Solve for x
    x = 1,986,500,883.54/69,089.01
  6. Step 6: Final answer
    x = 28,752.78

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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.