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Finding the Fourth Proportional to 57,989.88, 79,848.09 and 50,778.54

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Solution

The fourth proportional to 57,989.88, 79,848.09 and 50,778.54 is: 69,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,989.88 : 79,848.09 = 50,778.54 : x
  2. Step 2: Convert to fraction form
    57,989.88/79,848.09 = 50,778.54/x
  3. Step 3: Cross multiply
    57,989.88x = 79,848.09 × 50,778.54
  4. Step 4: Simplify right side
    57,989.88x = 4,054,569,431.99
  5. Step 5: Solve for x
    x = 4,054,569,431.99/57,989.88
  6. Step 6: Final answer
    x = 69,918.57

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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.