Finding the Fourth Proportional to 85,977.74, 128,933.87 and 33,374.99
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Solution
The fourth proportional to 85,977.74, 128,933.87 and 33,374.99 is: 50,049.77
Step by Step Solution
- Step 1: Write the proportion equation
85,977.74 : 128,933.87 = 33,374.99 : x - Step 2: Convert to fraction form
85,977.74/128,933.87 = 33,374.99/x - Step 3: Cross multiply
85,977.74x = 128,933.87 × 33,374.99 - Step 4: Simplify right side
85,977.74x = 4,303,165,810.37 - Step 5: Solve for x
x = 4,303,165,810.37/85,977.74 - Step 6: Final answer
x = 50,049.77
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1.5x scale
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.