Finding the Fourth Proportional to 87,743.96, 121,086.21 and 47,457.68
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Solution
The fourth proportional to 87,743.96, 121,086.21 and 47,457.68 is: 65,491.35
Step by Step Solution
- Step 1: Write the proportion equation
87,743.96 : 121,086.21 = 47,457.68 : x - Step 2: Convert to fraction form
87,743.96/121,086.21 = 47,457.68/x - Step 3: Cross multiply
87,743.96x = 121,086.21 × 47,457.68 - Step 4: Simplify right side
87,743.96x = 5,746,470,606.59 - Step 5: Solve for x
x = 5,746,470,606.59/87,743.96 - Step 6: Final answer
x = 65,491.35
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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.