Finding the Fourth Proportional to 8,891,811.70, 12,482,128.70 and 8,891,811.70
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Solution
The fourth proportional to 8,891,811.70, 12,482,128.70 and 8,891,811.70 is: 12,482,128.70
Step by Step Solution
- Step 1: Write the proportion equation
8,891,811.70 : 12,482,128.70 = 8,891,811.70 : x - Step 2: Convert to fraction form
8,891,811.70/12,482,128.70 = 8,891,811.70/x - Step 3: Cross multiply
8,891,811.70x = 12,482,128.70 × 8,891,811.70 - Step 4: Simplify right side
8,891,811.70x = 110,988,738,015,565.78 - Step 5: Solve for x
x = 110,988,738,015,565.78/8,891,811.70 - Step 6: Final answer
x = 12,482,128.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.