Finding the Fourth Proportional to 80,998.75, 121,539.12 and 54,648.14
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Solution
The fourth proportional to 80,998.75, 121,539.12 and 54,648.14 is: 81,999.87
Step by Step Solution
- Step 1: Write the proportion equation
80,998.75 : 121,539.12 = 54,648.14 : x - Step 2: Convert to fraction form
80,998.75/121,539.12 = 54,648.14/x - Step 3: Cross multiply
80,998.75x = 121,539.12 × 54,648.14 - Step 4: Simplify right side
80,998.75x = 6,641,886,845.24 - Step 5: Solve for x
x = 6,641,886,845.24/80,998.75 - Step 6: Final answer
x = 81,999.87
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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.