Home / 69,078.46-103,617.62-19,171.12

Finding the Fourth Proportional to 69,078.46, 103,617.62 and 19,171.12

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Solution

The fourth proportional to 69,078.46, 103,617.62 and 19,171.12 is: 28,756.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,078.46 : 103,617.62 = 19,171.12 : x
  2. Step 2: Convert to fraction form
    69,078.46/103,617.62 = 19,171.12/x
  3. Step 3: Cross multiply
    69,078.46x = 103,617.62 × 19,171.12
  4. Step 4: Simplify right side
    69,078.46x = 1,986,465,827.13
  5. Step 5: Solve for x
    x = 1,986,465,827.13/69,078.46
  6. Step 6: Final answer
    x = 28,756.66

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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.