Home / 51,540.78-71,133.81-28,881.30

Finding the Fourth Proportional to 51,540.78, 71,133.81 and 28,881.30

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Solution

The fourth proportional to 51,540.78, 71,133.81 and 28,881.30 is: 39,860.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,540.78 : 71,133.81 = 28,881.30 : x
  2. Step 2: Convert to fraction form
    51,540.78/71,133.81 = 28,881.30/x
  3. Step 3: Cross multiply
    51,540.78x = 71,133.81 × 28,881.30
  4. Step 4: Simplify right side
    51,540.78x = 2,054,436,906.75
  5. Step 5: Solve for x
    x = 2,054,436,906.75/51,540.78
  6. Step 6: Final answer
    x = 39,860.42

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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.