Finding the Fourth Proportional to 79,806.12, 110,153.68 and 47,129.20
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Solution
The fourth proportional to 79,806.12, 110,153.68 and 47,129.20 is: 65,050.84
Step by Step Solution
- Step 1: Write the proportion equation
79,806.12 : 110,153.68 = 47,129.20 : x - Step 2: Convert to fraction form
79,806.12/110,153.68 = 47,129.20/x - Step 3: Cross multiply
79,806.12x = 110,153.68 × 47,129.20 - Step 4: Simplify right side
79,806.12x = 5,191,454,815.46 - Step 5: Solve for x
x = 5,191,454,815.46/79,806.12 - Step 6: Final answer
x = 65,050.84
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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.