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Finding the Fourth Proportional to 69,370.60, 104,072.70 and 20,122.60

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Solution

The fourth proportional to 69,370.60, 104,072.70 and 20,122.60 is: 30,188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,370.60 : 104,072.70 = 20,122.60 : x
  2. Step 2: Convert to fraction form
    69,370.60/104,072.70 = 20,122.60/x
  3. Step 3: Cross multiply
    69,370.60x = 104,072.70 × 20,122.60
  4. Step 4: Simplify right side
    69,370.60x = 2,094,213,313.02
  5. Step 5: Solve for x
    x = 2,094,213,313.02/69,370.60
  6. Step 6: Final answer
    x = 30,188.77

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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.