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Finding the Fourth Proportional to 55,861.92, 83,770.92 and 20,314.80

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Solution

The fourth proportional to 55,861.92, 83,770.92 and 20,314.80 is: 30,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,861.92 : 83,770.92 = 20,314.80 : x
  2. Step 2: Convert to fraction form
    55,861.92/83,770.92 = 20,314.80/x
  3. Step 3: Cross multiply
    55,861.92x = 83,770.92 × 20,314.80
  4. Step 4: Simplify right side
    55,861.92x = 1,701,789,485.62
  5. Step 5: Solve for x
    x = 1,701,789,485.62/55,861.92
  6. Step 6: Final answer
    x = 30,464.21

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1.5x scale

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.