Finding the Fourth Proportional to 80,643,675.20, 120,965,512.80 and 46,631,451.20
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Solution
The fourth proportional to 80,643,675.20, 120,965,512.80 and 46,631,451.20 is: 69,947,176.80
Step by Step Solution
- Step 1: Write the proportion equation
80,643,675.20 : 120,965,512.80 = 46,631,451.20 : x - Step 2: Convert to fraction form
80,643,675.20/120,965,512.80 = 46,631,451.20/x - Step 3: Cross multiply
80,643,675.20x = 120,965,512.80 × 46,631,451.20 - Step 4: Simplify right side
80,643,675.20x = 5,640,797,407,016,176 - Step 5: Solve for x
x = 5,640,797,407,016,176/80,643,675.20 - Step 6: Final answer
x = 69,947,176.80
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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.