Finding the Fourth Proportional to 84,647.16, 126,956.97 and 31,364.28
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Solution
The fourth proportional to 84,647.16, 126,956.97 and 31,364.28 is: 47,041.32
Step by Step Solution
- Step 1: Write the proportion equation
84,647.16 : 126,956.97 = 31,364.28 : x - Step 2: Convert to fraction form
84,647.16/126,956.97 = 31,364.28/x - Step 3: Cross multiply
84,647.16x = 126,956.97 × 31,364.28 - Step 4: Simplify right side
84,647.16x = 3,981,913,955.03 - Step 5: Solve for x
x = 3,981,913,955.03/84,647.16 - Step 6: Final answer
x = 47,041.32
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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.