Home / 51,609.85-71,221.30-28,639.44

Finding the Fourth Proportional to 51,609.85, 71,221.30 and 28,639.44

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Solution

The fourth proportional to 51,609.85, 71,221.30 and 28,639.44 is: 39,522.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,609.85 : 71,221.30 = 28,639.44 : x
  2. Step 2: Convert to fraction form
    51,609.85/71,221.30 = 28,639.44/x
  3. Step 3: Cross multiply
    51,609.85x = 71,221.30 × 28,639.44
  4. Step 4: Simplify right side
    51,609.85x = 2,039,738,076.47
  5. Step 5: Solve for x
    x = 2,039,738,076.47/51,609.85
  6. Step 6: Final answer
    x = 39,522.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.