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Finding the Fourth Proportional to 75,394.30, 112,919.18 and 35,979.09

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Solution

The fourth proportional to 75,394.30, 112,919.18 and 35,979.09 is: 53,886.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,394.30 : 112,919.18 = 35,979.09 : x
  2. Step 2: Convert to fraction form
    75,394.30/112,919.18 = 35,979.09/x
  3. Step 3: Cross multiply
    75,394.30x = 112,919.18 × 35,979.09
  4. Step 4: Simplify right side
    75,394.30x = 4,062,728,775.35
  5. Step 5: Solve for x
    x = 4,062,728,775.35/75,394.30
  6. Step 6: Final answer
    x = 53,886.42

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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.