Finding the Fourth Proportional to 87,908.18, 121,313.23 and 47,622.08
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Solution
The fourth proportional to 87,908.18, 121,313.23 and 47,622.08 is: 65,718.44
Step by Step Solution
- Step 1: Write the proportion equation
87,908.18 : 121,313.23 = 47,622.08 : x - Step 2: Convert to fraction form
87,908.18/121,313.23 = 47,622.08/x - Step 3: Cross multiply
87,908.18x = 121,313.23 × 47,622.08 - Step 4: Simplify right side
87,908.18x = 5,777,188,528.35 - Step 5: Solve for x
x = 5,777,188,528.35/87,908.18 - Step 6: Final answer
x = 65,718.44
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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.