Finding the Fourth Proportional to 100,892.41, 139,232.46 and 55,571.99
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Solution
The fourth proportional to 100,892.41, 139,232.46 and 55,571.99 is: 76,689.87
Step by Step Solution
- Step 1: Write the proportion equation
100,892.41 : 139,232.46 = 55,571.99 : x - Step 2: Convert to fraction form
100,892.41/139,232.46 = 55,571.99/x - Step 3: Cross multiply
100,892.41x = 139,232.46 × 55,571.99 - Step 4: Simplify right side
100,892.41x = 7,737,425,275.54 - Step 5: Solve for x
x = 7,737,425,275.54/100,892.41 - Step 6: Final answer
x = 76,689.87
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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.