Finding the Fourth Proportional to 81,649,357.20, 122,474,035.80 and 27,796,669.20
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Solution
The fourth proportional to 81,649,357.20, 122,474,035.80 and 27,796,669.20 is: 41,695,003.80
Step by Step Solution
- Step 1: Write the proportion equation
81,649,357.20 : 122,474,035.80 = 27,796,669.20 : x - Step 2: Convert to fraction form
81,649,357.20/122,474,035.80 = 27,796,669.20/x - Step 3: Cross multiply
81,649,357.20x = 122,474,035.80 × 27,796,669.20 - Step 4: Simplify right side
81,649,357.20x = 3,404,370,258,721,557 - Step 5: Solve for x
x = 3,404,370,258,721,557/81,649,357.20 - Step 6: Final answer
x = 41,695,003.80
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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.