Finding the Fourth Proportional to 87,449.12, 120,679.80 and 49,725.68
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Solution
The fourth proportional to 87,449.12, 120,679.80 and 49,725.68 is: 68,621.45
Step by Step Solution
- Step 1: Write the proportion equation
87,449.12 : 120,679.80 = 49,725.68 : x - Step 2: Convert to fraction form
87,449.12/120,679.80 = 49,725.68/x - Step 3: Cross multiply
87,449.12x = 120,679.80 × 49,725.68 - Step 4: Simplify right side
87,449.12x = 6,000,885,117.26 - Step 5: Solve for x
x = 6,000,885,117.26/87,449.12 - Step 6: Final answer
x = 68,621.45
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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.