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Finding the Fourth Proportional to 69,190.46, 103,785.79 and 19,270.70

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Solution

The fourth proportional to 69,190.46, 103,785.79 and 19,270.70 is: 28,906.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,190.46 : 103,785.79 = 19,270.70 : x
  2. Step 2: Convert to fraction form
    69,190.46/103,785.79 = 19,270.70/x
  3. Step 3: Cross multiply
    69,190.46x = 103,785.79 × 19,270.70
  4. Step 4: Simplify right side
    69,190.46x = 2,000,024,823.35
  5. Step 5: Solve for x
    x = 2,000,024,823.35/69,190.46
  6. Step 6: Final answer
    x = 28,906.08

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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.