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Finding the Fourth Proportional to 69,188.78, 103,783.17 and 49,505.78

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Solution

The fourth proportional to 69,188.78, 103,783.17 and 49,505.78 is: 74,258.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,188.78 : 103,783.17 = 49,505.78 : x
  2. Step 2: Convert to fraction form
    69,188.78/103,783.17 = 49,505.78/x
  3. Step 3: Cross multiply
    69,188.78x = 103,783.17 × 49,505.78
  4. Step 4: Simplify right side
    69,188.78x = 5,137,867,226.83
  5. Step 5: Solve for x
    x = 5,137,867,226.83/69,188.78
  6. Step 6: Final answer
    x = 74,258.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.