Finding the Fourth Proportional to 12,154,964.87, 18,225,716.55 and 4,971,543.23
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Solution
The fourth proportional to 12,154,964.87, 18,225,716.55 and 4,971,543.23 is: 7,454,561.87
Step by Step Solution
- Step 1: Write the proportion equation
12,154,964.87 : 18,225,716.55 = 4,971,543.23 : x - Step 2: Convert to fraction form
12,154,964.87/18,225,716.55 = 4,971,543.23/x - Step 3: Cross multiply
12,154,964.87x = 18,225,716.55 × 4,971,543.23 - Step 4: Simplify right side
12,154,964.87x = 90,609,937,634,922.88 - Step 5: Solve for x
x = 90,609,937,634,922.88/12,154,964.87 - Step 6: Final answer
x = 7,454,561.87
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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.