Finding the Fourth Proportional to 74,413.36, 102,692.15 and 40,423.20
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Solution
The fourth proportional to 74,413.36, 102,692.15 and 40,423.20 is: 55,784.95
Step by Step Solution
- Step 1: Write the proportion equation
74,413.36 : 102,692.15 = 40,423.20 : x - Step 2: Convert to fraction form
74,413.36/102,692.15 = 40,423.20/x - Step 3: Cross multiply
74,413.36x = 102,692.15 × 40,423.20 - Step 4: Simplify right side
74,413.36x = 4,151,145,317.88 - Step 5: Solve for x
x = 4,151,145,317.88/74,413.36 - Step 6: Final answer
x = 55,784.95
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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.