Finding the Fourth Proportional to 94,028.70, 129,687.05 and 65,347.79
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Solution
The fourth proportional to 94,028.70, 129,687.05 and 65,347.79 is: 90,129.52
Step by Step Solution
- Step 1: Write the proportion equation
94,028.70 : 129,687.05 = 65,347.79 : x - Step 2: Convert to fraction form
94,028.70/129,687.05 = 65,347.79/x - Step 3: Cross multiply
94,028.70x = 129,687.05 × 65,347.79 - Step 4: Simplify right side
94,028.70x = 8,474,761,805.01 - Step 5: Solve for x
x = 8,474,761,805.01/94,028.70 - Step 6: Final answer
x = 90,129.52
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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.