Finding the Fourth Proportional to 128,469.96, 192,695.22 and 39,724.02
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Solution
The fourth proportional to 128,469.96, 192,695.22 and 39,724.02 is: 59,583.02
Step by Step Solution
- Step 1: Write the proportion equation
128,469.96 : 192,695.22 = 39,724.02 : x - Step 2: Convert to fraction form
128,469.96/192,695.22 = 39,724.02/x - Step 3: Cross multiply
128,469.96x = 192,695.22 × 39,724.02 - Step 4: Simplify right side
128,469.96x = 7,654,628,773.18 - Step 5: Solve for x
x = 7,654,628,773.18/128,469.96 - Step 6: Final answer
x = 59,583.02
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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.