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Finding the Fourth Proportional to 75,310.32, 112,956.84 and 19,910.64

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Solution

The fourth proportional to 75,310.32, 112,956.84 and 19,910.64 is: 29,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,310.32 : 112,956.84 = 19,910.64 : x
  2. Step 2: Convert to fraction form
    75,310.32/112,956.84 = 19,910.64/x
  3. Step 3: Cross multiply
    75,310.32x = 112,956.84 × 19,910.64
  4. Step 4: Simplify right side
    75,310.32x = 2,249,042,976.78
  5. Step 5: Solve for x
    x = 2,249,042,976.78/75,310.32
  6. Step 6: Final answer
    x = 29,863.68

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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.