Finding the Fourth Proportional to 85,427.60, 128,163.80 and 32,838.80
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Solution
The fourth proportional to 85,427.60, 128,163.80 and 32,838.80 is: 49,266.81
Step by Step Solution
- Step 1: Write the proportion equation
85,427.60 : 128,163.80 = 32,838.80 : x - Step 2: Convert to fraction form
85,427.60/128,163.80 = 32,838.80/x - Step 3: Cross multiply
85,427.60x = 128,163.80 × 32,838.80 - Step 4: Simplify right side
85,427.60x = 4,208,745,395.44 - Step 5: Solve for x
x = 4,208,745,395.44/85,427.60 - Step 6: Final answer
x = 49,266.81
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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.