Finding the Fourth Proportional to 80,643,454.80, 120,965,182.20 and 26,790,766.80
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Solution
The fourth proportional to 80,643,454.80, 120,965,182.20 and 26,790,766.80 is: 40,186,150.20
Step by Step Solution
- Step 1: Write the proportion equation
80,643,454.80 : 120,965,182.20 = 26,790,766.80 : x - Step 2: Convert to fraction form
80,643,454.80/120,965,182.20 = 26,790,766.80/x - Step 3: Cross multiply
80,643,454.80x = 120,965,182.20 × 26,790,766.80 - Step 4: Simplify right side
80,643,454.80x = 3,240,749,987,239,711 - Step 5: Solve for x
x = 3,240,749,987,239,711/80,643,454.80 - Step 6: Final answer
x = 40,186,150.20
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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.