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Finding the Fourth Proportional to 55,175.60, 82,733.16 and 21,861.92

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Solution

The fourth proportional to 55,175.60, 82,733.16 and 21,861.92 is: 32,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,175.60 : 82,733.16 = 21,861.92 : x
  2. Step 2: Convert to fraction form
    55,175.60/82,733.16 = 21,861.92/x
  3. Step 3: Cross multiply
    55,175.60x = 82,733.16 × 21,861.92
  4. Step 4: Simplify right side
    55,175.60x = 1,808,705,725.27
  5. Step 5: Solve for x
    x = 1,808,705,725.27/55,175.60
  6. Step 6: Final answer
    x = 32,780.90

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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.