Finding the Fourth Proportional to 87,192.57, 120,329.70 and 51,384.09
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Solution
The fourth proportional to 87,192.57, 120,329.70 and 51,384.09 is: 70,912.37
Step by Step Solution
- Step 1: Write the proportion equation
87,192.57 : 120,329.70 = 51,384.09 : x - Step 2: Convert to fraction form
87,192.57/120,329.70 = 51,384.09/x - Step 3: Cross multiply
87,192.57x = 120,329.70 × 51,384.09 - Step 4: Simplify right side
87,192.57x = 6,183,032,134.47 - Step 5: Solve for x
x = 6,183,032,134.47/87,192.57 - Step 6: Final answer
x = 70,912.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.