Finding the Fourth Proportional to 75,678.45, 104,436.98 and 41,687.09
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Solution
The fourth proportional to 75,678.45, 104,436.98 and 41,687.09 is: 57,528.58
Step by Step Solution
- Step 1: Write the proportion equation
75,678.45 : 104,436.98 = 41,687.09 : x - Step 2: Convert to fraction form
75,678.45/104,436.98 = 41,687.09/x - Step 3: Cross multiply
75,678.45x = 104,436.98 × 41,687.09 - Step 4: Simplify right side
75,678.45x = 4,353,673,784.59 - Step 5: Solve for x
x = 4,353,673,784.59/75,678.45 - Step 6: Final answer
x = 57,528.58
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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.