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Finding the Fourth Proportional to 69,699.28, 96,190.86 and 39,494.20

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Solution

The fourth proportional to 69,699.28, 96,190.86 and 39,494.20 is: 54,505.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,699.28 : 96,190.86 = 39,494.20 : x
  2. Step 2: Convert to fraction form
    69,699.28/96,190.86 = 39,494.20/x
  3. Step 3: Cross multiply
    69,699.28x = 96,190.86 × 39,494.20
  4. Step 4: Simplify right side
    69,699.28x = 3,798,981,063.01
  5. Step 5: Solve for x
    x = 3,798,981,063.01/69,699.28
  6. Step 6: Final answer
    x = 54,505.31

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1.5x scale

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.