Finding the Fourth Proportional to 81,107.08, 121,569.78 and 53,081.08
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Solution
The fourth proportional to 81,107.08, 121,569.78 and 53,081.08 is: 79,562.17
Step by Step Solution
- Step 1: Write the proportion equation
81,107.08 : 121,569.78 = 53,081.08 : x - Step 2: Convert to fraction form
81,107.08/121,569.78 = 53,081.08/x - Step 3: Cross multiply
81,107.08x = 121,569.78 × 53,081.08 - Step 4: Simplify right side
81,107.08x = 6,453,055,217.76 - Step 5: Solve for x
x = 6,453,055,217.76/81,107.08 - Step 6: Final answer
x = 79,562.17
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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.