Finding the Fourth Proportional to 87,528.57, 120,790.98 and 51,718.50
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Solution
The fourth proportional to 87,528.57, 120,790.98 and 51,718.50 is: 71,372.45
Step by Step Solution
- Step 1: Write the proportion equation
87,528.57 : 120,790.98 = 51,718.50 : x - Step 2: Convert to fraction form
87,528.57/120,790.98 = 51,718.50/x - Step 3: Cross multiply
87,528.57x = 120,790.98 × 51,718.50 - Step 4: Simplify right side
87,528.57x = 6,247,128,299.13 - Step 5: Solve for x
x = 6,247,128,299.13/87,528.57 - Step 6: Final answer
x = 71,372.45
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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.