Finding the Fourth Proportional to 81,777,563.18, 122,667,413.24 and 27,190,148.72
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Solution
The fourth proportional to 81,777,563.18, 122,667,413.24 and 27,190,148.72 is: 40,785,578.33
Step by Step Solution
- Step 1: Write the proportion equation
81,777,563.18 : 122,667,413.24 = 27,190,148.72 : x - Step 2: Convert to fraction form
81,777,563.18/122,667,413.24 = 27,190,148.72/x - Step 3: Cross multiply
81,777,563.18x = 122,667,413.24 × 27,190,148.72 - Step 4: Simplify right side
81,777,563.18x = 3,335,345,208,547,935.50 - Step 5: Solve for x
x = 3,335,345,208,547,935.50/81,777,563.18 - Step 6: Final answer
x = 40,785,578.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.