Finding the Fourth Proportional to 71,240.20, 106,860.30 and 67,959.70
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Solution
The fourth proportional to 71,240.20, 106,860.30 and 67,959.70 is: 101,939.55
Step by Step Solution
- Step 1: Write the proportion equation
71,240.20 : 106,860.30 = 67,959.70 : x - Step 2: Convert to fraction form
71,240.20/106,860.30 = 67,959.70/x - Step 3: Cross multiply
71,240.20x = 106,860.30 × 67,959.70 - Step 4: Simplify right side
71,240.20x = 7,262,193,929.91 - Step 5: Solve for x
x = 7,262,193,929.91/71,240.20 - Step 6: Final answer
x = 101,939.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.