Finding the Fourth Proportional to 80,881.44, 121,248.24 and 68,481.36
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Solution
The fourth proportional to 80,881.44, 121,248.24 and 68,481.36 is: 102,659.45
Step by Step Solution
- Step 1: Write the proportion equation
80,881.44 : 121,248.24 = 68,481.36 : x - Step 2: Convert to fraction form
80,881.44/121,248.24 = 68,481.36/x - Step 3: Cross multiply
80,881.44x = 121,248.24 × 68,481.36 - Step 4: Simplify right side
80,881.44x = 8,303,244,372.81 - Step 5: Solve for x
x = 8,303,244,372.81/80,881.44 - Step 6: Final answer
x = 102,659.45
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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.