Finding the Fourth Proportional to 86,139.19, 118,872.08 and 48,413.44
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Solution
The fourth proportional to 86,139.19, 118,872.08 and 48,413.44 is: 66,810.55
Step by Step Solution
- Step 1: Write the proportion equation
86,139.19 : 118,872.08 = 48,413.44 : x - Step 2: Convert to fraction form
86,139.19/118,872.08 = 48,413.44/x - Step 3: Cross multiply
86,139.19x = 118,872.08 × 48,413.44 - Step 4: Simplify right side
86,139.19x = 5,755,006,136.61 - Step 5: Solve for x
x = 5,755,006,136.61/86,139.19 - Step 6: Final answer
x = 66,810.55
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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.