Finding the Fourth Proportional to 96,453.63, 133,140.92 and 78,517.50
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Solution
The fourth proportional to 96,453.63, 133,140.92 and 78,517.50 is: 108,382.56
Step by Step Solution
- Step 1: Write the proportion equation
96,453.63 : 133,140.92 = 78,517.50 : x - Step 2: Convert to fraction form
96,453.63/133,140.92 = 78,517.50/x - Step 3: Cross multiply
96,453.63x = 133,140.92 × 78,517.50 - Step 4: Simplify right side
96,453.63x = 10,453,891,294.23 - Step 5: Solve for x
x = 10,453,891,294.23/96,453.63 - Step 6: Final answer
x = 108,382.56
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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.