Finding the Fourth Proportional to 87,543.13, 131,314.70 and 21,879.13
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Solution
The fourth proportional to 87,543.13, 131,314.70 and 21,879.13 is: 32,818.70
Step by Step Solution
- Step 1: Write the proportion equation
87,543.13 : 131,314.70 = 21,879.13 : x - Step 2: Convert to fraction form
87,543.13/131,314.70 = 21,879.13/x - Step 3: Cross multiply
87,543.13x = 131,314.70 × 21,879.13 - Step 4: Simplify right side
87,543.13x = 2,873,051,392.21 - Step 5: Solve for x
x = 2,873,051,392.21/87,543.13 - Step 6: Final answer
x = 32,818.70
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1.5x scale
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.