Finding the Fourth Proportional to 115,724.99, 159,692.94 and 64,728.87
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Solution
The fourth proportional to 115,724.99, 159,692.94 and 64,728.87 is: 89,321.62
Step by Step Solution
- Step 1: Write the proportion equation
115,724.99 : 159,692.94 = 64,728.87 : x - Step 2: Convert to fraction form
115,724.99/159,692.94 = 64,728.87/x - Step 3: Cross multiply
115,724.99x = 159,692.94 × 64,728.87 - Step 4: Simplify right side
115,724.99x = 10,336,743,553.18 - Step 5: Solve for x
x = 10,336,743,553.18/115,724.99 - Step 6: Final answer
x = 89,321.62
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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.