Finding the Fourth Proportional to 80,758.80, 121,267.80 and 54,579.60
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Solution
The fourth proportional to 80,758.80, 121,267.80 and 54,579.60 is: 81,956.99
Step by Step Solution
- Step 1: Write the proportion equation
80,758.80 : 121,267.80 = 54,579.60 : x - Step 2: Convert to fraction form
80,758.80/121,267.80 = 54,579.60/x - Step 3: Cross multiply
80,758.80x = 121,267.80 × 54,579.60 - Step 4: Simplify right side
80,758.80x = 6,618,748,016.88 - Step 5: Solve for x
x = 6,618,748,016.88/80,758.80 - Step 6: Final answer
x = 81,956.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.