Finding the Fourth Proportional to 87,616.08, 120,919.64 and 53,647.38
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Solution
The fourth proportional to 87,616.08, 120,919.64 and 53,647.38 is: 74,039.17
Step by Step Solution
- Step 1: Write the proportion equation
87,616.08 : 120,919.64 = 53,647.38 : x - Step 2: Convert to fraction form
87,616.08/120,919.64 = 53,647.38/x - Step 3: Cross multiply
87,616.08x = 120,919.64 × 53,647.38 - Step 4: Simplify right side
87,616.08x = 6,487,021,608.31 - Step 5: Solve for x
x = 6,487,021,608.31/87,616.08 - Step 6: Final answer
x = 74,039.17
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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.