Finding the Fourth Proportional to 115,289.19, 172,828.49 and 40,368.38
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Solution
The fourth proportional to 115,289.19, 172,828.49 and 40,368.38 is: 60,515.69
Step by Step Solution
- Step 1: Write the proportion equation
115,289.19 : 172,828.49 = 40,368.38 : x - Step 2: Convert to fraction form
115,289.19/172,828.49 = 40,368.38/x - Step 3: Cross multiply
115,289.19x = 172,828.49 × 40,368.38 - Step 4: Simplify right side
115,289.19x = 6,976,805,093.16 - Step 5: Solve for x
x = 6,976,805,093.16/115,289.19 - Step 6: Final answer
x = 60,515.69
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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.