Finding the Fourth Proportional to 87,298.60, 120,433.98 and 55,013.68
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Solution
The fourth proportional to 87,298.60, 120,433.98 and 55,013.68 is: 75,894.88
Step by Step Solution
- Step 1: Write the proportion equation
87,298.60 : 120,433.98 = 55,013.68 : x - Step 2: Convert to fraction form
87,298.60/120,433.98 = 55,013.68/x - Step 3: Cross multiply
87,298.60x = 120,433.98 × 55,013.68 - Step 4: Simplify right side
87,298.60x = 6,625,516,436.85 - Step 5: Solve for x
x = 6,625,516,436.85/87,298.60 - Step 6: Final answer
x = 75,894.88
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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.