Finding the Fourth Proportional to 87,889.96, 121,287.84 and 47,603.60
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Solution
The fourth proportional to 87,889.96, 121,287.84 and 47,603.60 is: 65,692.80
Step by Step Solution
- Step 1: Write the proportion equation
87,889.96 : 121,287.84 = 47,603.60 : x - Step 2: Convert to fraction form
87,889.96/121,287.84 = 47,603.60/x - Step 3: Cross multiply
87,889.96x = 121,287.84 × 47,603.60 - Step 4: Simplify right side
87,889.96x = 5,773,737,820.22 - Step 5: Solve for x
x = 5,773,737,820.22/87,889.96 - Step 6: Final answer
x = 65,692.80
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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.