Finding the Fourth Proportional to 87,908.88, 121,314.84 and 47,622.63
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Solution
The fourth proportional to 87,908.88, 121,314.84 and 47,622.63 is: 65,719.55
Step by Step Solution
- Step 1: Write the proportion equation
87,908.88 : 121,314.84 = 47,622.63 : x - Step 2: Convert to fraction form
87,908.88/121,314.84 = 47,622.63/x - Step 3: Cross multiply
87,908.88x = 121,314.84 × 47,622.63 - Step 4: Simplify right side
87,908.88x = 5,777,331,738.83 - Step 5: Solve for x
x = 5,777,331,738.83/87,908.88 - Step 6: Final answer
x = 65,719.55
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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.