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Finding the Fourth Proportional to 85,143.56, 127,715.37 and 35,168.73

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Solution

The fourth proportional to 85,143.56, 127,715.37 and 35,168.73 is: 52,753.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,143.56 : 127,715.37 = 35,168.73 : x
  2. Step 2: Convert to fraction form
    85,143.56/127,715.37 = 35,168.73/x
  3. Step 3: Cross multiply
    85,143.56x = 127,715.37 × 35,168.73
  4. Step 4: Simplify right side
    85,143.56x = 4,491,587,364.38
  5. Step 5: Solve for x
    x = 4,491,587,364.38/85,143.56
  6. Step 6: Final answer
    x = 52,753.11

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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.