Finding the Fourth Proportional to 90,376.99, 135,563.43 and 31,207.09
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Solution
The fourth proportional to 90,376.99, 135,563.43 and 31,207.09 is: 46,809.93
Step by Step Solution
- Step 1: Write the proportion equation
90,376.99 : 135,563.43 = 31,207.09 : x - Step 2: Convert to fraction form
90,376.99/135,563.43 = 31,207.09/x - Step 3: Cross multiply
90,376.99x = 135,563.43 × 31,207.09 - Step 4: Simplify right side
90,376.99x = 4,230,540,160.72 - Step 5: Solve for x
x = 4,230,540,160.72/90,376.99 - Step 6: Final answer
x = 46,809.93
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.