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Finding the Fourth Proportional to 75,168.32, 112,743.52 and 19,768.64

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Solution

The fourth proportional to 75,168.32, 112,743.52 and 19,768.64 is: 29,650.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,168.32 : 112,743.52 = 19,768.64 : x
  2. Step 2: Convert to fraction form
    75,168.32/112,743.52 = 19,768.64/x
  3. Step 3: Cross multiply
    75,168.32x = 112,743.52 × 19,768.64
  4. Step 4: Simplify right side
    75,168.32x = 2,228,786,059.21
  5. Step 5: Solve for x
    x = 2,228,786,059.21/75,168.32
  6. Step 6: Final answer
    x = 29,650.60

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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.