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Finding the Fourth Proportional to 30,363.41, 45,540.96 and 8,178.11

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Solution

The fourth proportional to 30,363.41, 45,540.96 and 8,178.11 is: 12,266.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363.41 : 45,540.96 = 8,178.11 : x
  2. Step 2: Convert to fraction form
    30,363.41/45,540.96 = 8,178.11/x
  3. Step 3: Cross multiply
    30,363.41x = 45,540.96 × 8,178.11
  4. Step 4: Simplify right side
    30,363.41x = 372,439,171.96
  5. Step 5: Solve for x
    x = 372,439,171.96/30,363.41
  6. Step 6: Final answer
    x = 12,266.05

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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.