Finding the Fourth Proportional to 87,388.80, 120,592.14 and 53,390.70
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Solution
The fourth proportional to 87,388.80, 120,592.14 and 53,390.70 is: 73,676.48
Step by Step Solution
- Step 1: Write the proportion equation
87,388.80 : 120,592.14 = 53,390.70 : x - Step 2: Convert to fraction form
87,388.80/120,592.14 = 53,390.70/x - Step 3: Cross multiply
87,388.80x = 120,592.14 × 53,390.70 - Step 4: Simplify right side
87,388.80x = 6,438,498,769.10 - Step 5: Solve for x
x = 6,438,498,769.10/87,388.80 - Step 6: Final answer
x = 73,676.48
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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.