Finding the Fourth Proportional to 128,529.24, 192,802.02 and 39,775.29
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Solution
The fourth proportional to 128,529.24, 192,802.02 and 39,775.29 is: 59,665.46
Step by Step Solution
- Step 1: Write the proportion equation
128,529.24 : 192,802.02 = 39,775.29 : x - Step 2: Convert to fraction form
128,529.24/192,802.02 = 39,775.29/x - Step 3: Cross multiply
128,529.24x = 192,802.02 × 39,775.29 - Step 4: Simplify right side
128,529.24x = 7,668,756,258.09 - Step 5: Solve for x
x = 7,668,756,258.09/128,529.24 - Step 6: Final answer
x = 59,665.46
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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.