Finding the Fourth Proportional to 74,458.40, 102,751.40 and 40,923.68
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Solution
The fourth proportional to 74,458.40, 102,751.40 and 40,923.68 is: 56,474.02
Step by Step Solution
- Step 1: Write the proportion equation
74,458.40 : 102,751.40 = 40,923.68 : x - Step 2: Convert to fraction form
74,458.40/102,751.40 = 40,923.68/x - Step 3: Cross multiply
74,458.40x = 102,751.40 × 40,923.68 - Step 4: Simplify right side
74,458.40x = 4,204,965,413.15 - Step 5: Solve for x
x = 4,204,965,413.15/74,458.40 - Step 6: Final answer
x = 56,474.02
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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.