Finding the Fourth Proportional to 87,949.98, 121,369.19 and 49,187.70
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Solution
The fourth proportional to 87,949.98, 121,369.19 and 49,187.70 is: 67,878.03
Step by Step Solution
- Step 1: Write the proportion equation
87,949.98 : 121,369.19 = 49,187.70 : x - Step 2: Convert to fraction form
87,949.98/121,369.19 = 49,187.70/x - Step 3: Cross multiply
87,949.98x = 121,369.19 × 49,187.70 - Step 4: Simplify right side
87,949.98x = 5,969,871,061.02 - Step 5: Solve for x
x = 5,969,871,061.02/87,949.98 - Step 6: Final answer
x = 67,878.03
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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.