Finding the Fourth Proportional to 91,995.18, 126,963.92 and 51,163.45
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Solution
The fourth proportional to 91,995.18, 126,963.92 and 51,163.45 is: 70,611.44
Step by Step Solution
- Step 1: Write the proportion equation
91,995.18 : 126,963.92 = 51,163.45 : x - Step 2: Convert to fraction form
91,995.18/126,963.92 = 51,163.45/x - Step 3: Cross multiply
91,995.18x = 126,963.92 × 51,163.45 - Step 4: Simplify right side
91,995.18x = 6,495,911,983.22 - Step 5: Solve for x
x = 6,495,911,983.22/91,995.18 - Step 6: Final answer
x = 70,611.44
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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.