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Finding the Fourth Proportional to 69,080.46, 103,620.62 and 19,173.12

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Solution

The fourth proportional to 69,080.46, 103,620.62 and 19,173.12 is: 28,759.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,080.46 : 103,620.62 = 19,173.12 : x
  2. Step 2: Convert to fraction form
    69,080.46/103,620.62 = 19,173.12/x
  3. Step 3: Cross multiply
    69,080.46x = 103,620.62 × 19,173.12
  4. Step 4: Simplify right side
    69,080.46x = 1,986,730,581.73
  5. Step 5: Solve for x
    x = 1,986,730,581.73/69,080.46
  6. Step 6: Final answer
    x = 28,759.66

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1.5x scale

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.