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Finding the Fourth Proportional to 57,211.92, 85,638.06 and 39,628.44

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Solution

The fourth proportional to 57,211.92, 85,638.06 and 39,628.44 is: 59,318.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,211.92 : 85,638.06 = 39,628.44 : x
  2. Step 2: Convert to fraction form
    57,211.92/85,638.06 = 39,628.44/x
  3. Step 3: Cross multiply
    57,211.92x = 85,638.06 × 39,628.44
  4. Step 4: Simplify right side
    57,211.92x = 3,393,702,722.43
  5. Step 5: Solve for x
    x = 3,393,702,722.43/57,211.92
  6. Step 6: Final answer
    x = 59,318.11

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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.