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Finding the Fourth Proportional to 69,050.71, 103,564.53 and 19,135.87

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Solution

The fourth proportional to 69,050.71, 103,564.53 and 19,135.87 is: 28,700.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,050.71 : 103,564.53 = 19,135.87 : x
  2. Step 2: Convert to fraction form
    69,050.71/103,564.53 = 19,135.87/x
  3. Step 3: Cross multiply
    69,050.71x = 103,564.53 × 19,135.87
  4. Step 4: Simplify right side
    69,050.71x = 1,981,797,382.69
  5. Step 5: Solve for x
    x = 1,981,797,382.69/69,050.71
  6. Step 6: Final answer
    x = 28,700.61

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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.