Finding the Fourth Proportional to 87,319.84, 120,511.62 and 49,079.44
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Solution
The fourth proportional to 87,319.84, 120,511.62 and 49,079.44 is: 67,735.38
Step by Step Solution
- Step 1: Write the proportion equation
87,319.84 : 120,511.62 = 49,079.44 : x - Step 2: Convert to fraction form
87,319.84/120,511.62 = 49,079.44/x - Step 3: Cross multiply
87,319.84x = 120,511.62 × 49,079.44 - Step 4: Simplify right side
87,319.84x = 5,914,642,823.09 - Step 5: Solve for x
x = 5,914,642,823.09/87,319.84 - Step 6: Final answer
x = 67,735.38
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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.