Finding the Fourth Proportional to 85,618.08, 128,427.84 and 26,453.52
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Solution
The fourth proportional to 85,618.08, 128,427.84 and 26,453.52 is: 39,680.50
Step by Step Solution
- Step 1: Write the proportion equation
85,618.08 : 128,427.84 = 26,453.52 : x - Step 2: Convert to fraction form
85,618.08/128,427.84 = 26,453.52/x - Step 3: Cross multiply
85,618.08x = 128,427.84 × 26,453.52 - Step 4: Simplify right side
85,618.08x = 3,397,368,434.00 - Step 5: Solve for x
x = 3,397,368,434.00/85,618.08 - Step 6: Final answer
x = 39,680.50
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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.