Finding the Fourth Proportional to 81,193,751.40, 121,790,627.10 and 55,365,718.80
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Solution
The fourth proportional to 81,193,751.40, 121,790,627.10 and 55,365,718.80 is: 83,048,578.20
Step by Step Solution
- Step 1: Write the proportion equation
81,193,751.40 : 121,790,627.10 = 55,365,718.80 : x - Step 2: Convert to fraction form
81,193,751.40/121,790,627.10 = 55,365,718.80/x - Step 3: Cross multiply
81,193,751.40x = 121,790,627.10 × 55,365,718.80 - Step 4: Simplify right side
81,193,751.40x = 6,743,025,612,494,259 - Step 5: Solve for x
x = 6,743,025,612,494,259/81,193,751.40 - Step 6: Final answer
x = 83,048,578.20
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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.