Finding the Fourth Proportional to 75,790.84, 104,620.18 and 56,982.60
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Solution
The fourth proportional to 75,790.84, 104,620.18 and 56,982.60 is: 78,657.66
Step by Step Solution
- Step 1: Write the proportion equation
75,790.84 : 104,620.18 = 56,982.60 : x - Step 2: Convert to fraction form
75,790.84/104,620.18 = 56,982.60/x - Step 3: Cross multiply
75,790.84x = 104,620.18 × 56,982.60 - Step 4: Simplify right side
75,790.84x = 5,961,529,868.87 - Step 5: Solve for x
x = 5,961,529,868.87/75,790.84 - Step 6: Final answer
x = 78,657.66
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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.