Home / 51,286.78-70,775.82-28,316.62

Finding the Fourth Proportional to 51,286.78, 70,775.82 and 28,316.62

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Solution

The fourth proportional to 51,286.78, 70,775.82 and 28,316.62 is: 39,076.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,286.78 : 70,775.82 = 28,316.62 : x
  2. Step 2: Convert to fraction form
    51,286.78/70,775.82 = 28,316.62/x
  3. Step 3: Cross multiply
    51,286.78x = 70,775.82 × 28,316.62
  4. Step 4: Simplify right side
    51,286.78x = 2,004,132,000.13
  5. Step 5: Solve for x
    x = 2,004,132,000.13/51,286.78
  6. Step 6: Final answer
    x = 39,076.97

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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.