Finding the Fourth Proportional to 87,910.18, 121,315.99 and 47,624.08
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Solution
The fourth proportional to 87,910.18, 121,315.99 and 47,624.08 is: 65,721.20
Step by Step Solution
- Step 1: Write the proportion equation
87,910.18 : 121,315.99 = 47,624.08 : x - Step 2: Convert to fraction form
87,910.18/121,315.99 = 47,624.08/x - Step 3: Cross multiply
87,910.18x = 121,315.99 × 47,624.08 - Step 4: Simplify right side
87,910.18x = 5,777,562,413.04 - Step 5: Solve for x
x = 5,777,562,413.04/87,910.18 - Step 6: Final answer
x = 65,721.20
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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.