Finding the Fourth Proportional to 99,342.99, 149,043.78 and 40,221.09
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Solution
The fourth proportional to 99,342.99, 149,043.78 and 40,221.09 is: 60,343.50
Step by Step Solution
- Step 1: Write the proportion equation
99,342.99 : 149,043.78 = 40,221.09 : x - Step 2: Convert to fraction form
99,342.99/149,043.78 = 40,221.09/x - Step 3: Cross multiply
99,342.99x = 149,043.78 × 40,221.09 - Step 4: Simplify right side
99,342.99x = 5,994,703,289.32 - Step 5: Solve for x
x = 5,994,703,289.32/99,342.99 - Step 6: Final answer
x = 60,343.50
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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.