Finding the Fourth Proportional to 78,021.68, 107,664.84 and 44,035.76
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Solution
The fourth proportional to 78,021.68, 107,664.84 and 44,035.76 is: 60,766.48
Step by Step Solution
- Step 1: Write the proportion equation
78,021.68 : 107,664.84 = 44,035.76 : x - Step 2: Convert to fraction form
78,021.68/107,664.84 = 44,035.76/x - Step 3: Cross multiply
78,021.68x = 107,664.84 × 44,035.76 - Step 4: Simplify right side
78,021.68x = 4,741,103,054.68 - Step 5: Solve for x
x = 4,741,103,054.68/78,021.68 - Step 6: Final answer
x = 60,766.48
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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.