Finding the Fourth Proportional to 77,137.99, 106,260.15 and 65,770.45
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Solution
The fourth proportional to 77,137.99, 106,260.15 and 65,770.45 is: 90,600.99
Step by Step Solution
- Step 1: Write the proportion equation
77,137.99 : 106,260.15 = 65,770.45 : x - Step 2: Convert to fraction form
77,137.99/106,260.15 = 65,770.45/x - Step 3: Cross multiply
77,137.99x = 106,260.15 × 65,770.45 - Step 4: Simplify right side
77,137.99x = 6,988,777,863.56 - Step 5: Solve for x
x = 6,988,777,863.56/77,137.99 - Step 6: Final answer
x = 90,600.99
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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.