Finding the Fourth Proportional to 98,891.87, 136,471.36 and 55,872.21
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Solution
The fourth proportional to 98,891.87, 136,471.36 and 55,872.21 is: 77,103.98
Step by Step Solution
- Step 1: Write the proportion equation
98,891.87 : 136,471.36 = 55,872.21 : x - Step 2: Convert to fraction form
98,891.87/136,471.36 = 55,872.21/x - Step 3: Cross multiply
98,891.87x = 136,471.36 × 55,872.21 - Step 4: Simplify right side
98,891.87x = 7,624,956,870.31 - Step 5: Solve for x
x = 7,624,956,870.31/98,891.87 - Step 6: Final answer
x = 77,103.98
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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.