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Finding the Fourth Proportional to 69,842.03, 96,392.15 and 39,218.56

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Solution

The fourth proportional to 69,842.03, 96,392.15 and 39,218.56 is: 54,127.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,842.03 : 96,392.15 = 39,218.56 : x
  2. Step 2: Convert to fraction form
    69,842.03/96,392.15 = 39,218.56/x
  3. Step 3: Cross multiply
    69,842.03x = 96,392.15 × 39,218.56
  4. Step 4: Simplify right side
    69,842.03x = 3,780,361,175.37
  5. Step 5: Solve for x
    x = 3,780,361,175.37/69,842.03
  6. Step 6: Final answer
    x = 54,127.31

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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.