Finding the Fourth Proportional to 68,141,397.80, 102,212,096.70 and 40,931,618.60
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Solution
The fourth proportional to 68,141,397.80, 102,212,096.70 and 40,931,618.60 is: 61,397,427.90
Step by Step Solution
- Step 1: Write the proportion equation
68,141,397.80 : 102,212,096.70 = 40,931,618.60 : x - Step 2: Convert to fraction form
68,141,397.80/102,212,096.70 = 40,931,618.60/x - Step 3: Cross multiply
68,141,397.80x = 102,212,096.70 × 40,931,618.60 - Step 4: Simplify right side
68,141,397.80x = 4,183,706,558,430,719 - Step 5: Solve for x
x = 4,183,706,558,430,719/68,141,397.80 - Step 6: Final answer
x = 61,397,427.90
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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.