Finding the Fourth Proportional to 77,486,516.80, 116,229,775.20 and 43,474,292.80
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Solution
The fourth proportional to 77,486,516.80, 116,229,775.20 and 43,474,292.80 is: 65,211,439.20
Step by Step Solution
- Step 1: Write the proportion equation
77,486,516.80 : 116,229,775.20 = 43,474,292.80 : x - Step 2: Convert to fraction form
77,486,516.80/116,229,775.20 = 43,474,292.80/x - Step 3: Cross multiply
77,486,516.80x = 116,229,775.20 × 43,474,292.80 - Step 4: Simplify right side
77,486,516.80x = 5,053,007,279,122,978 - Step 5: Solve for x
x = 5,053,007,279,122,978/77,486,516.80 - Step 6: Final answer
x = 65,211,439.20
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1.5x scale
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.