Finding the Fourth Proportional to 81,737,647.36, 122,467,726.72 and 49,321,438.72
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Solution
The fourth proportional to 81,737,647.36, 122,467,726.72 and 49,321,438.72 is: 73,898,438.16
Step by Step Solution
- Step 1: Write the proportion equation
81,737,647.36 : 122,467,726.72 = 49,321,438.72 : x - Step 2: Convert to fraction form
81,737,647.36/122,467,726.72 = 49,321,438.72/x - Step 3: Cross multiply
81,737,647.36x = 122,467,726.72 × 49,321,438.72 - Step 4: Simplify right side
81,737,647.36x = 6,040,284,478,598,186 - Step 5: Solve for x
x = 6,040,284,478,598,186/81,737,647.36 - Step 6: Final answer
x = 73,898,438.16
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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.