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Finding the Fourth Proportional to 47,179.43, 70,769.15 and 12,119.12

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Solution

The fourth proportional to 47,179.43, 70,769.15 and 12,119.12 is: 18,178.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,179.43 : 70,769.15 = 12,119.12 : x
  2. Step 2: Convert to fraction form
    47,179.43/70,769.15 = 12,119.12/x
  3. Step 3: Cross multiply
    47,179.43x = 70,769.15 × 12,119.12
  4. Step 4: Simplify right side
    47,179.43x = 857,659,760.55
  5. Step 5: Solve for x
    x = 857,659,760.55/47,179.43
  6. Step 6: Final answer
    x = 18,178.68

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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.