Finding the Fourth Proportional to 80,766.48, 121,023.76 and 51,121.70
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Solution
The fourth proportional to 80,766.48, 121,023.76 and 51,121.70 is: 76,602.82
Step by Step Solution
- Step 1: Write the proportion equation
80,766.48 : 121,023.76 = 51,121.70 : x - Step 2: Convert to fraction form
80,766.48/121,023.76 = 51,121.70/x - Step 3: Cross multiply
80,766.48x = 121,023.76 × 51,121.70 - Step 4: Simplify right side
80,766.48x = 6,186,940,351.59 - Step 5: Solve for x
x = 6,186,940,351.59/80,766.48 - Step 6: Final answer
x = 76,602.82
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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.