Finding the Fourth Proportional to 9,378,536.72, 12,942,102.64 and 5,192,408.12
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Solution
The fourth proportional to 9,378,536.72, 12,942,102.64 and 5,192,408.12 is: 7,165,369.27
Step by Step Solution
- Step 1: Write the proportion equation
9,378,536.72 : 12,942,102.64 = 5,192,408.12 : x - Step 2: Convert to fraction form
9,378,536.72/12,942,102.64 = 5,192,408.12/x - Step 3: Cross multiply
9,378,536.72x = 12,942,102.64 × 5,192,408.12 - Step 4: Simplify right side
9,378,536.72x = 67,200,678,837,809.44 - Step 5: Solve for x
x = 67,200,678,837,809.44/9,378,536.72 - Step 6: Final answer
x = 7,165,369.27
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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.