Finding the Fourth Proportional to 81,580.14, 122,355.60 and 51,909.84
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Solution
The fourth proportional to 81,580.14, 122,355.60 and 51,909.84 is: 77,855.46
Step by Step Solution
- Step 1: Write the proportion equation
81,580.14 : 122,355.60 = 51,909.84 : x - Step 2: Convert to fraction form
81,580.14/122,355.60 = 51,909.84/x - Step 3: Cross multiply
81,580.14x = 122,355.60 × 51,909.84 - Step 4: Simplify right side
81,580.14x = 6,351,459,619.10 - Step 5: Solve for x
x = 6,351,459,619.10/81,580.14 - Step 6: Final answer
x = 77,855.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.