Home / 69,079.19-103,618.80-19,171.85

Finding the Fourth Proportional to 69,079.19, 103,618.80 and 19,171.85

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Solution

The fourth proportional to 69,079.19, 103,618.80 and 19,171.85 is: 28,757.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,079.19 : 103,618.80 = 19,171.85 : x
  2. Step 2: Convert to fraction form
    69,079.19/103,618.80 = 19,171.85/x
  3. Step 3: Cross multiply
    69,079.19x = 103,618.80 × 19,171.85
  4. Step 4: Simplify right side
    69,079.19x = 1,986,563,572.69
  5. Step 5: Solve for x
    x = 1,986,563,572.69/69,079.19
  6. Step 6: Final answer
    x = 28,757.77

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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.