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Finding the Fourth Proportional to 85,357.56, 127,825.74 and 63,667.20

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Solution

The fourth proportional to 85,357.56, 127,825.74 and 63,667.20 is: 95,343.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,357.56 : 127,825.74 = 63,667.20 : x
  2. Step 2: Convert to fraction form
    85,357.56/127,825.74 = 63,667.20/x
  3. Step 3: Cross multiply
    85,357.56x = 127,825.74 × 63,667.20
  4. Step 4: Simplify right side
    85,357.56x = 8,138,306,953.73
  5. Step 5: Solve for x
    x = 8,138,306,953.73/85,357.56
  6. Step 6: Final answer
    x = 95,343.72

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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.