Finding the Fourth Proportional to 87,420.68, 120,640.36 and 49,180.26
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Solution
The fourth proportional to 87,420.68, 120,640.36 and 49,180.26 is: 67,868.66
Step by Step Solution
- Step 1: Write the proportion equation
87,420.68 : 120,640.36 = 49,180.26 : x - Step 2: Convert to fraction form
87,420.68/120,640.36 = 49,180.26/x - Step 3: Cross multiply
87,420.68x = 120,640.36 × 49,180.26 - Step 4: Simplify right side
87,420.68x = 5,933,124,271.29 - Step 5: Solve for x
x = 5,933,124,271.29/87,420.68 - Step 6: Final answer
x = 67,868.66
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1.5x scale
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.