Home / 51,186.89-70,638.42-28,217.54

Finding the Fourth Proportional to 51,186.89, 70,638.42 and 28,217.54

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Solution

The fourth proportional to 51,186.89, 70,638.42 and 28,217.54 is: 38,940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,186.89 : 70,638.42 = 28,217.54 : x
  2. Step 2: Convert to fraction form
    51,186.89/70,638.42 = 28,217.54/x
  3. Step 3: Cross multiply
    51,186.89x = 70,638.42 × 28,217.54
  4. Step 4: Simplify right side
    51,186.89x = 1,993,242,088.69
  5. Step 5: Solve for x
    x = 1,993,242,088.69/51,186.89
  6. Step 6: Final answer
    x = 38,940.48

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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.