Finding the Fourth Proportional to 128,992.08, 193,489.32 and 39,035.44
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Solution
The fourth proportional to 128,992.08, 193,489.32 and 39,035.44 is: 58,553.52
Step by Step Solution
- Step 1: Write the proportion equation
128,992.08 : 193,489.32 = 39,035.44 : x - Step 2: Convert to fraction form
128,992.08/193,489.32 = 39,035.44/x - Step 3: Cross multiply
128,992.08x = 193,489.32 × 39,035.44 - Step 4: Simplify right side
128,992.08x = 7,552,940,741.50 - Step 5: Solve for x
x = 7,552,940,741.50/128,992.08 - Step 6: Final answer
x = 58,553.52
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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.