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Finding the Fourth Proportional to 56,372.94, 84,565.11 and 20,843.76

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Solution

The fourth proportional to 56,372.94, 84,565.11 and 20,843.76 is: 31,267.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,372.94 : 84,565.11 = 20,843.76 : x
  2. Step 2: Convert to fraction form
    56,372.94/84,565.11 = 20,843.76/x
  3. Step 3: Cross multiply
    56,372.94x = 84,565.11 × 20,843.76
  4. Step 4: Simplify right side
    56,372.94x = 1,762,654,857.21
  5. Step 5: Solve for x
    x = 1,762,654,857.21/56,372.94
  6. Step 6: Final answer
    x = 31,267.75

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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.