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Finding the Fourth Proportional to 69,080.08, 103,620.13 and 19,160.18

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Solution

The fourth proportional to 69,080.08, 103,620.13 and 19,160.18 is: 28,740.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,080.08 : 103,620.13 = 19,160.18 : x
  2. Step 2: Convert to fraction form
    69,080.08/103,620.13 = 19,160.18/x
  3. Step 3: Cross multiply
    69,080.08x = 103,620.13 × 19,160.18
  4. Step 4: Simplify right side
    69,080.08x = 1,985,380,342.42
  5. Step 5: Solve for x
    x = 1,985,380,342.42/69,080.08
  6. Step 6: Final answer
    x = 28,740.27

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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.