Finding the Fourth Proportional to 99,891.11, 137,853.94 and 57,449.69
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Solution
The fourth proportional to 99,891.11, 137,853.94 and 57,449.69 is: 79,282.99
Step by Step Solution
- Step 1: Write the proportion equation
99,891.11 : 137,853.94 = 57,449.69 : x - Step 2: Convert to fraction form
99,891.11/137,853.94 = 57,449.69/x - Step 3: Cross multiply
99,891.11x = 137,853.94 × 57,449.69 - Step 4: Simplify right side
99,891.11x = 7,919,665,486.40 - Step 5: Solve for x
x = 7,919,665,486.40/99,891.11 - Step 6: Final answer
x = 79,282.99
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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.