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Finding the Fourth Proportional to 85,049.44, 127,491.40 and 40,664.68

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Solution

The fourth proportional to 85,049.44, 127,491.40 and 40,664.68 is: 60,957.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,049.44 : 127,491.40 = 40,664.68 : x
  2. Step 2: Convert to fraction form
    85,049.44/127,491.40 = 40,664.68/x
  3. Step 3: Cross multiply
    85,049.44x = 127,491.40 × 40,664.68
  4. Step 4: Simplify right side
    85,049.44x = 5,184,396,983.75
  5. Step 5: Solve for x
    x = 5,184,396,983.75/85,049.44
  6. Step 6: Final answer
    x = 60,957.45

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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.