Finding the Fourth Proportional to 87,432.60, 131,408.10 and 76,027.80
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Solution
The fourth proportional to 87,432.60, 131,408.10 and 76,027.80 is: 114,267.09
Step by Step Solution
- Step 1: Write the proportion equation
87,432.60 : 131,408.10 = 76,027.80 : x - Step 2: Convert to fraction form
87,432.60/131,408.10 = 76,027.80/x - Step 3: Cross multiply
87,432.60x = 131,408.10 × 76,027.80 - Step 4: Simplify right side
87,432.60x = 9,990,668,745.18 - Step 5: Solve for x
x = 9,990,668,745.18/87,432.60 - Step 6: Final answer
x = 114,267.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.