Finding the Fourth Proportional to 77,545.30, 115,792.66 and 61,571.09
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Solution
The fourth proportional to 77,545.30, 115,792.66 and 61,571.09 is: 91,939.55
Step by Step Solution
- Step 1: Write the proportion equation
77,545.30 : 115,792.66 = 61,571.09 : x - Step 2: Convert to fraction form
77,545.30/115,792.66 = 61,571.09/x - Step 3: Cross multiply
77,545.30x = 115,792.66 × 61,571.09 - Step 4: Simplify right side
77,545.30x = 7,129,479,658.97 - Step 5: Solve for x
x = 7,129,479,658.97/77,545.30 - Step 6: Final answer
x = 91,939.55
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.