Finding the Fourth Proportional to 128,685.96, 192,981.50 and 44,424.68
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Solution
The fourth proportional to 128,685.96, 192,981.50 and 44,424.68 is: 66,620.64
Step by Step Solution
- Step 1: Write the proportion equation
128,685.96 : 192,981.50 = 44,424.68 : x - Step 2: Convert to fraction form
128,685.96/192,981.50 = 44,424.68/x - Step 3: Cross multiply
128,685.96x = 192,981.50 × 44,424.68 - Step 4: Simplify right side
128,685.96x = 8,573,141,383.42 - Step 5: Solve for x
x = 8,573,141,383.42/128,685.96 - Step 6: Final answer
x = 66,620.64
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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.