Finding the Fourth Proportional to 73,143.19, 100,937.55 and 39,609.19
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Solution
The fourth proportional to 73,143.19, 100,937.55 and 39,609.19 is: 54,660.65
Step by Step Solution
- Step 1: Write the proportion equation
73,143.19 : 100,937.55 = 39,609.19 : x - Step 2: Convert to fraction form
73,143.19/100,937.55 = 39,609.19/x - Step 3: Cross multiply
73,143.19x = 100,937.55 × 39,609.19 - Step 4: Simplify right side
73,143.19x = 3,998,054,596.08 - Step 5: Solve for x
x = 3,998,054,596.08/73,143.19 - Step 6: Final answer
x = 54,660.65
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1.5x scale
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.