Finding the Fourth Proportional to 80,994.97, 121,493.54 and 28,405.99
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Solution
The fourth proportional to 80,994.97, 121,493.54 and 28,405.99 is: 42,609.36
Step by Step Solution
- Step 1: Write the proportion equation
80,994.97 : 121,493.54 = 28,405.99 : x - Step 2: Convert to fraction form
80,994.97/121,493.54 = 28,405.99/x - Step 3: Cross multiply
80,994.97x = 121,493.54 × 28,405.99 - Step 4: Simplify right side
80,994.97x = 3,451,144,140.27 - Step 5: Solve for x
x = 3,451,144,140.27/80,994.97 - Step 6: Final answer
x = 42,609.36
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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.