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Finding the Fourth Proportional to 56,195.82, 84,265.83 and 20,655.70

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Solution

The fourth proportional to 56,195.82, 84,265.83 and 20,655.70 is: 30,973.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,195.82 : 84,265.83 = 20,655.70 : x
  2. Step 2: Convert to fraction form
    56,195.82/84,265.83 = 20,655.70/x
  3. Step 3: Cross multiply
    56,195.82x = 84,265.83 × 20,655.70
  4. Step 4: Simplify right side
    56,195.82x = 1,740,569,704.73
  5. Step 5: Solve for x
    x = 1,740,569,704.73/56,195.82
  6. Step 6: Final answer
    x = 30,973.29

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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.