Finding the Fourth Proportional to 107,226.81, 147,979.62 and 61,913.07
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Solution
The fourth proportional to 107,226.81, 147,979.62 and 61,913.07 is: 85,443.86
Step by Step Solution
- Step 1: Write the proportion equation
107,226.81 : 147,979.62 = 61,913.07 : x - Step 2: Convert to fraction form
107,226.81/147,979.62 = 61,913.07/x - Step 3: Cross multiply
107,226.81x = 147,979.62 × 61,913.07 - Step 4: Simplify right side
107,226.81x = 9,161,872,571.63 - Step 5: Solve for x
x = 9,161,872,571.63/107,226.81 - Step 6: Final answer
x = 85,443.86
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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.