Finding the Fourth Proportional to 87,951.08, 121,330.34 and 57,724.20
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Solution
The fourth proportional to 87,951.08, 121,330.34 and 57,724.20 is: 79,631.73
Step by Step Solution
- Step 1: Write the proportion equation
87,951.08 : 121,330.34 = 57,724.20 : x - Step 2: Convert to fraction form
87,951.08/121,330.34 = 57,724.20/x - Step 3: Cross multiply
87,951.08x = 121,330.34 × 57,724.20 - Step 4: Simplify right side
87,951.08x = 7,003,696,812.23 - Step 5: Solve for x
x = 7,003,696,812.23/87,951.08 - Step 6: Final answer
x = 79,631.73
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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.