Finding the Fourth Proportional to 87,457.20, 120,708.88 and 55,619.96
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Solution
The fourth proportional to 87,457.20, 120,708.88 and 55,619.96 is: 76,766.96
Step by Step Solution
- Step 1: Write the proportion equation
87,457.20 : 120,708.88 = 55,619.96 : x - Step 2: Convert to fraction form
87,457.20/120,708.88 = 55,619.96/x - Step 3: Cross multiply
87,457.20x = 120,708.88 × 55,619.96 - Step 4: Simplify right side
87,457.20x = 6,713,823,077.24 - Step 5: Solve for x
x = 6,713,823,077.24/87,457.20 - Step 6: Final answer
x = 76,766.96
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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.