Finding the Fourth Proportional to 90,573.76, 135,861.09 and 53,107.48
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Solution
The fourth proportional to 90,573.76, 135,861.09 and 53,107.48 is: 79,661.48
Step by Step Solution
- Step 1: Write the proportion equation
90,573.76 : 135,861.09 = 53,107.48 : x - Step 2: Convert to fraction form
90,573.76/135,861.09 = 53,107.48/x - Step 3: Cross multiply
90,573.76x = 135,861.09 × 53,107.48 - Step 4: Simplify right side
90,573.76x = 7,215,240,119.95 - Step 5: Solve for x
x = 7,215,240,119.95/90,573.76 - Step 6: Final answer
x = 79,661.48
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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.