Finding the Fourth Proportional to 80,805.36, 121,258.52 and 30,889.68
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Solution
The fourth proportional to 80,805.36, 121,258.52 and 30,889.68 is: 46,353.82
Step by Step Solution
- Step 1: Write the proportion equation
80,805.36 : 121,258.52 = 30,889.68 : x - Step 2: Convert to fraction form
80,805.36/121,258.52 = 30,889.68/x - Step 3: Cross multiply
80,805.36x = 121,258.52 × 30,889.68 - Step 4: Simplify right side
80,805.36x = 3,745,636,880.07 - Step 5: Solve for x
x = 3,745,636,880.07/80,805.36 - Step 6: Final answer
x = 46,353.82
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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.