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Finding the Fourth Proportional to 40,956.52, 61,432.62 and 20,173

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Solution

The fourth proportional to 40,956.52, 61,432.62 and 20,173 is: 30,258.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,956.52 : 61,432.62 = 20,173 : x
  2. Step 2: Convert to fraction form
    40,956.52/61,432.62 = 20,173/x
  3. Step 3: Cross multiply
    40,956.52x = 61,432.62 × 20,173
  4. Step 4: Simplify right side
    40,956.52x = 1,239,280,243.26
  5. Step 5: Solve for x
    x = 1,239,280,243.26/40,956.52
  6. Step 6: Final answer
    x = 30,258.44

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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.