Finding the Fourth Proportional to 86,207.36, 118,982.49 and 53,956.94
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Solution
The fourth proportional to 86,207.36, 118,982.49 and 53,956.94 is: 74,470.80
Step by Step Solution
- Step 1: Write the proportion equation
86,207.36 : 118,982.49 = 53,956.94 : x - Step 2: Convert to fraction form
86,207.36/118,982.49 = 53,956.94/x - Step 3: Cross multiply
86,207.36x = 118,982.49 × 53,956.94 - Step 4: Simplify right side
86,207.36x = 6,419,931,073.98 - Step 5: Solve for x
x = 6,419,931,073.98/86,207.36 - Step 6: Final answer
x = 74,470.80
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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.