Finding the Fourth Proportional to 75,711.24, 104,438.16 and 47,367.72
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Solution
The fourth proportional to 75,711.24, 104,438.16 and 47,367.72 is: 65,340.33
Step by Step Solution
- Step 1: Write the proportion equation
75,711.24 : 104,438.16 = 47,367.72 : x - Step 2: Convert to fraction form
75,711.24/104,438.16 = 47,367.72/x - Step 3: Cross multiply
75,711.24x = 104,438.16 × 47,367.72 - Step 4: Simplify right side
75,711.24x = 4,946,997,520.20 - Step 5: Solve for x
x = 4,946,997,520.20/75,711.24 - Step 6: Final answer
x = 65,340.33
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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.