Finding the Fourth Proportional to 84,961.76, 117,137.04 and 54,692.96
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Solution
The fourth proportional to 84,961.76, 117,137.04 and 54,692.96 is: 75,405.35
Step by Step Solution
- Step 1: Write the proportion equation
84,961.76 : 117,137.04 = 54,692.96 : x - Step 2: Convert to fraction form
84,961.76/117,137.04 = 54,692.96/x - Step 3: Cross multiply
84,961.76x = 117,137.04 × 54,692.96 - Step 4: Simplify right side
84,961.76x = 6,406,571,443.24 - Step 5: Solve for x
x = 6,406,571,443.24/84,961.76 - Step 6: Final answer
x = 75,405.35
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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.