Finding the Fourth Proportional to 74,413.46, 102,692.42 and 40,421.94
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Solution
The fourth proportional to 74,413.46, 102,692.42 and 40,421.94 is: 55,783.28
Step by Step Solution
- Step 1: Write the proportion equation
74,413.46 : 102,692.42 = 40,421.94 : x - Step 2: Convert to fraction form
74,413.46/102,692.42 = 40,421.94/x - Step 3: Cross multiply
74,413.46x = 102,692.42 × 40,421.94 - Step 4: Simplify right side
74,413.46x = 4,151,026,631.44 - Step 5: Solve for x
x = 4,151,026,631.44/74,413.46 - Step 6: Final answer
x = 55,783.28
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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.