Finding the Fourth Proportional to 128,529.70, 192,736.95 and 49,617.70
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Solution
The fourth proportional to 128,529.70, 192,736.95 and 49,617.70 is: 74,404.31
Step by Step Solution
- Step 1: Write the proportion equation
128,529.70 : 192,736.95 = 49,617.70 : x - Step 2: Convert to fraction form
128,529.70/192,736.95 = 49,617.70/x - Step 3: Cross multiply
128,529.70x = 192,736.95 × 49,617.70 - Step 4: Simplify right side
128,529.70x = 9,563,164,164.02 - Step 5: Solve for x
x = 9,563,164,164.02/128,529.70 - Step 6: Final answer
x = 74,404.31
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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.