Finding the Fourth Proportional to 75,639.92, 113,529.93 and 38,226.32
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Solution
The fourth proportional to 75,639.92, 113,529.93 and 38,226.32 is: 57,374.88
Step by Step Solution
- Step 1: Write the proportion equation
75,639.92 : 113,529.93 = 38,226.32 : x - Step 2: Convert to fraction form
75,639.92/113,529.93 = 38,226.32/x - Step 3: Cross multiply
75,639.92x = 113,529.93 × 38,226.32 - Step 4: Simplify right side
75,639.92x = 4,339,831,433.76 - Step 5: Solve for x
x = 4,339,831,433.76/75,639.92 - Step 6: Final answer
x = 57,374.88
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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.