Finding the Fourth Proportional to 87,889.32, 121,286.97 and 47,602.98
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Solution
The fourth proportional to 87,889.32, 121,286.97 and 47,602.98 is: 65,691.95
Step by Step Solution
- Step 1: Write the proportion equation
87,889.32 : 121,286.97 = 47,602.98 : x - Step 2: Convert to fraction form
87,889.32/121,286.97 = 47,602.98/x - Step 3: Cross multiply
87,889.32x = 121,286.97 × 47,602.98 - Step 4: Simplify right side
87,889.32x = 5,773,621,207.17 - Step 5: Solve for x
x = 5,773,621,207.17/87,889.32 - Step 6: Final answer
x = 65,691.95
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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.