Finding the Fourth Proportional to 87,120.75, 120,182.36 and 56,923.75
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Solution
The fourth proportional to 87,120.75, 120,182.36 and 56,923.75 is: 78,525.85
Step by Step Solution
- Step 1: Write the proportion equation
87,120.75 : 120,182.36 = 56,923.75 : x - Step 2: Convert to fraction form
87,120.75/120,182.36 = 56,923.75/x - Step 3: Cross multiply
87,120.75x = 120,182.36 × 56,923.75 - Step 4: Simplify right side
87,120.75x = 6,841,230,615.05 - Step 5: Solve for x
x = 6,841,230,615.05/87,120.75 - Step 6: Final answer
x = 78,525.85
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1.5x scale
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.