Finding the Fourth Proportional to 77,318.16, 115,979.76 and 27,391.44
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Solution
The fourth proportional to 77,318.16, 115,979.76 and 27,391.44 is: 41,088.05
Step by Step Solution
- Step 1: Write the proportion equation
77,318.16 : 115,979.76 = 27,391.44 : x - Step 2: Convert to fraction form
77,318.16/115,979.76 = 27,391.44/x - Step 3: Cross multiply
77,318.16x = 115,979.76 × 27,391.44 - Step 4: Simplify right side
77,318.16x = 3,176,852,637.25 - Step 5: Solve for x
x = 3,176,852,637.25/77,318.16 - Step 6: Final answer
x = 41,088.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.