Finding the Fourth Proportional to 85,625.80, 128,457.83 and 41,289.84
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Solution
The fourth proportional to 85,625.80, 128,457.83 and 41,289.84 is: 61,943.99
Step by Step Solution
- Step 1: Write the proportion equation
85,625.80 : 128,457.83 = 41,289.84 : x - Step 2: Convert to fraction form
85,625.80/128,457.83 = 41,289.84/x - Step 3: Cross multiply
85,625.80x = 128,457.83 × 41,289.84 - Step 4: Simplify right side
85,625.80x = 5,304,003,350.67 - Step 5: Solve for x
x = 5,304,003,350.67/85,625.80 - Step 6: Final answer
x = 61,943.99
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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.