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Finding the Fourth Proportional to 85,188.56, 127,471.80 and 50,144.72

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Solution

The fourth proportional to 85,188.56, 127,471.80 and 50,144.72 is: 75,033.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,188.56 : 127,471.80 = 50,144.72 : x
  2. Step 2: Convert to fraction form
    85,188.56/127,471.80 = 50,144.72/x
  3. Step 3: Cross multiply
    85,188.56x = 127,471.80 × 50,144.72
  4. Step 4: Simplify right side
    85,188.56x = 6,392,037,718.90
  5. Step 5: Solve for x
    x = 6,392,037,718.90/85,188.56
  6. Step 6: Final answer
    x = 75,033.99

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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.