Finding the Fourth Proportional to 80,248.92, 120,309.12 and 38,107.68
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Solution
The fourth proportional to 80,248.92, 120,309.12 and 38,107.68 is: 57,131.00
Step by Step Solution
- Step 1: Write the proportion equation
80,248.92 : 120,309.12 = 38,107.68 : x - Step 2: Convert to fraction form
80,248.92/120,309.12 = 38,107.68/x - Step 3: Cross multiply
80,248.92x = 120,309.12 × 38,107.68 - Step 4: Simplify right side
80,248.92x = 4,584,701,446.04 - Step 5: Solve for x
x = 4,584,701,446.04/80,248.92 - Step 6: Final answer
x = 57,131.00
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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.