Finding the Fourth Proportional to 5,162,066.75, 7,124,543.80 and 2,987,808.75
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Solution
The fourth proportional to 5,162,066.75, 7,124,543.80 and 2,987,808.75 is: 4,123,692.18
Step by Step Solution
- Step 1: Write the proportion equation
5,162,066.75 : 7,124,543.80 = 2,987,808.75 : x - Step 2: Convert to fraction form
5,162,066.75/7,124,543.80 = 2,987,808.75/x - Step 3: Cross multiply
5,162,066.75x = 7,124,543.80 × 2,987,808.75 - Step 4: Simplify right side
5,162,066.75x = 21,286,774,297,928.73 - Step 5: Solve for x
x = 21,286,774,297,928.73/5,162,066.75 - Step 6: Final answer
x = 4,123,692.18
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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.