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Finding the Fourth Proportional to 56,887.75, 85,324.11 and 16,905.88

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Solution

The fourth proportional to 56,887.75, 85,324.11 and 16,905.88 is: 25,356.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,887.75 : 85,324.11 = 16,905.88 : x
  2. Step 2: Convert to fraction form
    56,887.75/85,324.11 = 16,905.88/x
  3. Step 3: Cross multiply
    56,887.75x = 85,324.11 × 16,905.88
  4. Step 4: Simplify right side
    56,887.75x = 1,442,479,164.77
  5. Step 5: Solve for x
    x = 1,442,479,164.77/56,887.75
  6. Step 6: Final answer
    x = 25,356.59

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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.