Finding the Fourth Proportional to 81,921.44, 122,876.40 and 46,750.88
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Solution
The fourth proportional to 81,921.44, 122,876.40 and 46,750.88 is: 70,123.03
Step by Step Solution
- Step 1: Write the proportion equation
81,921.44 : 122,876.40 = 46,750.88 : x - Step 2: Convert to fraction form
81,921.44/122,876.40 = 46,750.88/x - Step 3: Cross multiply
81,921.44x = 122,876.40 × 46,750.88 - Step 4: Simplify right side
81,921.44x = 5,744,579,831.23 - Step 5: Solve for x
x = 5,744,579,831.23/81,921.44 - Step 6: Final answer
x = 70,123.03
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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.