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Finding the Fourth Proportional to 85,558.56, 128,359.68 and 35,622

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Solution

The fourth proportional to 85,558.56, 128,359.68 and 35,622 is: 53,442.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,558.56 : 128,359.68 = 35,622 : x
  2. Step 2: Convert to fraction form
    85,558.56/128,359.68 = 35,622/x
  3. Step 3: Cross multiply
    85,558.56x = 128,359.68 × 35,622
  4. Step 4: Simplify right side
    85,558.56x = 4,572,428,520.96
  5. Step 5: Solve for x
    x = 4,572,428,520.96/85,558.56
  6. Step 6: Final answer
    x = 53,442.09

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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.