Finding the Fourth Proportional to 97,990.20, 135,236.52 and 57,716.64
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Solution
The fourth proportional to 97,990.20, 135,236.52 and 57,716.64 is: 79,654.88
Step by Step Solution
- Step 1: Write the proportion equation
97,990.20 : 135,236.52 = 57,716.64 : x - Step 2: Convert to fraction form
97,990.20/135,236.52 = 57,716.64/x - Step 3: Cross multiply
97,990.20x = 135,236.52 × 57,716.64 - Step 4: Simplify right side
97,990.20x = 7,805,397,539.69 - Step 5: Solve for x
x = 7,805,397,539.69/97,990.20 - Step 6: Final answer
x = 79,654.88
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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.