Finding the Fourth Proportional to 87,403.20, 120,616.80 and 49,675.20
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Solution
The fourth proportional to 87,403.20, 120,616.80 and 49,675.20 is: 68,551.99
Step by Step Solution
- Step 1: Write the proportion equation
87,403.20 : 120,616.80 = 49,675.20 : x - Step 2: Convert to fraction form
87,403.20/120,616.80 = 49,675.20/x - Step 3: Cross multiply
87,403.20x = 120,616.80 × 49,675.20 - Step 4: Simplify right side
87,403.20x = 5,991,663,663.36 - Step 5: Solve for x
x = 5,991,663,663.36/87,403.20 - Step 6: Final answer
x = 68,551.99
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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.