Finding the Fourth Proportional to 73,138.08, 100,930.55 and 39,604.08
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Solution
The fourth proportional to 73,138.08, 100,930.55 and 39,604.08 is: 54,653.63
Step by Step Solution
- Step 1: Write the proportion equation
73,138.08 : 100,930.55 = 39,604.08 : x - Step 2: Convert to fraction form
73,138.08/100,930.55 = 39,604.08/x - Step 3: Cross multiply
73,138.08x = 100,930.55 × 39,604.08 - Step 4: Simplify right side
73,138.08x = 3,997,261,412.15 - Step 5: Solve for x
x = 3,997,261,412.15/73,138.08 - Step 6: Final answer
x = 54,653.63
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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.