Finding the Fourth Proportional to 112,086,687.87, 154,676,121.75 and 65,707,831.80
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Solution
The fourth proportional to 112,086,687.87, 154,676,121.75 and 65,707,831.80 is: 90,674,751.70
Step by Step Solution
- Step 1: Write the proportion equation
112,086,687.87 : 154,676,121.75 = 65,707,831.80 : x - Step 2: Convert to fraction form
112,086,687.87/154,676,121.75 = 65,707,831.80/x - Step 3: Cross multiply
112,086,687.87x = 154,676,121.75 × 65,707,831.80 - Step 4: Simplify right side
112,086,687.87x = 10,163,432,591,425,322 - Step 5: Solve for x
x = 10,163,432,591,425,322/112,086,687.87 - Step 6: Final answer
x = 90,674,751.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.