Finding the Fourth Proportional to 92,819.66, 128,091.26 and 50,378.20
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Solution
The fourth proportional to 92,819.66, 128,091.26 and 50,378.20 is: 69,521.99
Step by Step Solution
- Step 1: Write the proportion equation
92,819.66 : 128,091.26 = 50,378.20 : x - Step 2: Convert to fraction form
92,819.66/128,091.26 = 50,378.20/x - Step 3: Cross multiply
92,819.66x = 128,091.26 × 50,378.20 - Step 4: Simplify right side
92,819.66x = 6,453,006,920.25 - Step 5: Solve for x
x = 6,453,006,920.25/92,819.66 - Step 6: Final answer
x = 69,521.99
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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.