Finding the Fourth Proportional to 87,859.10, 121,245.63 and 47,572.88
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Solution
The fourth proportional to 87,859.10, 121,245.63 and 47,572.88 is: 65,650.61
Step by Step Solution
- Step 1: Write the proportion equation
87,859.10 : 121,245.63 = 47,572.88 : x - Step 2: Convert to fraction form
87,859.10/121,245.63 = 47,572.88/x - Step 3: Cross multiply
87,859.10x = 121,245.63 × 47,572.88 - Step 4: Simplify right side
87,859.10x = 5,768,003,806.51 - Step 5: Solve for x
x = 5,768,003,806.51/87,859.10 - Step 6: Final answer
x = 65,650.61
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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.