Finding the Fourth Proportional to 75,138.68, 103,724.88 and 49,660.40
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Solution
The fourth proportional to 75,138.68, 103,724.88 and 49,660.40 is: 68,553.49
Step by Step Solution
- Step 1: Write the proportion equation
75,138.68 : 103,724.88 = 49,660.40 : x - Step 2: Convert to fraction form
75,138.68/103,724.88 = 49,660.40/x - Step 3: Cross multiply
75,138.68x = 103,724.88 × 49,660.40 - Step 4: Simplify right side
75,138.68x = 5,151,019,030.75 - Step 5: Solve for x
x = 5,151,019,030.75/75,138.68 - Step 6: Final answer
x = 68,553.49
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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.