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Finding the Fourth Proportional to 85,561.52, 128,325 and 23,232.56

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Solution

The fourth proportional to 85,561.52, 128,325 and 23,232.56 is: 34,844.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,561.52 : 128,325 = 23,232.56 : x
  2. Step 2: Convert to fraction form
    85,561.52/128,325 = 23,232.56/x
  3. Step 3: Cross multiply
    85,561.52x = 128,325 × 23,232.56
  4. Step 4: Simplify right side
    85,561.52x = 2,981,318,262
  5. Step 5: Solve for x
    x = 2,981,318,262/85,561.52
  6. Step 6: Final answer
    x = 34,844.15

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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.