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Finding the Fourth Proportional to 56,871.43, 85,324.91 and 16,890.64

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Solution

The fourth proportional to 56,871.43, 85,324.91 and 16,890.64 is: 25,341.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,871.43 : 85,324.91 = 16,890.64 : x
  2. Step 2: Convert to fraction form
    56,871.43/85,324.91 = 16,890.64/x
  3. Step 3: Cross multiply
    56,871.43x = 85,324.91 × 16,890.64
  4. Step 4: Simplify right side
    56,871.43x = 1,441,192,337.84
  5. Step 5: Solve for x
    x = 1,441,192,337.84/56,871.43
  6. Step 6: Final answer
    x = 25,341.24

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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.