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Finding the Fourth Proportional to 69,760.84, 104,641.27 and 20,512.84

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Solution

The fourth proportional to 69,760.84, 104,641.27 and 20,512.84 is: 30,769.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,760.84 : 104,641.27 = 20,512.84 : x
  2. Step 2: Convert to fraction form
    69,760.84/104,641.27 = 20,512.84/x
  3. Step 3: Cross multiply
    69,760.84x = 104,641.27 × 20,512.84
  4. Step 4: Simplify right side
    69,760.84x = 2,146,489,628.91
  5. Step 5: Solve for x
    x = 2,146,489,628.91/69,760.84
  6. Step 6: Final answer
    x = 30,769.26

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Similar ratio
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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.