Finding the Fourth Proportional to 66,888,159.20, 100,332,238.80 and 53,451,231.20
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Solution
The fourth proportional to 66,888,159.20, 100,332,238.80 and 53,451,231.20 is: 80,176,846.80
Step by Step Solution
- Step 1: Write the proportion equation
66,888,159.20 : 100,332,238.80 = 53,451,231.20 : x - Step 2: Convert to fraction form
66,888,159.20/100,332,238.80 = 53,451,231.20/x - Step 3: Cross multiply
66,888,159.20x = 100,332,238.80 × 53,451,231.20 - Step 4: Simplify right side
66,888,159.20x = 5,362,881,692,912,411 - Step 5: Solve for x
x = 5,362,881,692,912,411/66,888,159.20 - Step 6: Final answer
x = 80,176,846.80
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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.