Finding the Fourth Proportional to 115,221.13, 172,831.80 and 32,115.13
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Solution
The fourth proportional to 115,221.13, 172,831.80 and 32,115.13 is: 48,172.72
Step by Step Solution
- Step 1: Write the proportion equation
115,221.13 : 172,831.80 = 32,115.13 : x - Step 2: Convert to fraction form
115,221.13/172,831.80 = 32,115.13/x - Step 3: Cross multiply
115,221.13x = 172,831.80 × 32,115.13 - Step 4: Simplify right side
115,221.13x = 5,550,515,725.13 - Step 5: Solve for x
x = 5,550,515,725.13/115,221.13 - Step 6: Final answer
x = 48,172.72
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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.