Finding the Fourth Proportional to 74,405.16, 102,679.88 and 40,413.98
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Solution
The fourth proportional to 74,405.16, 102,679.88 and 40,413.98 is: 55,771.70
Step by Step Solution
- Step 1: Write the proportion equation
74,405.16 : 102,679.88 = 40,413.98 : x - Step 2: Convert to fraction form
74,405.16/102,679.88 = 40,413.98/x - Step 3: Cross multiply
74,405.16x = 102,679.88 × 40,413.98 - Step 4: Simplify right side
74,405.16x = 4,149,701,901.25 - Step 5: Solve for x
x = 4,149,701,901.25/74,405.16 - Step 6: Final answer
x = 55,771.70
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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.