Finding the Fourth Proportional to 115,827.60, 159,821.52 and 68,090.64
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Solution
The fourth proportional to 115,827.60, 159,821.52 and 68,090.64 is: 93,952.99
Step by Step Solution
- Step 1: Write the proportion equation
115,827.60 : 159,821.52 = 68,090.64 : x - Step 2: Convert to fraction form
115,827.60/159,821.52 = 68,090.64/x - Step 3: Cross multiply
115,827.60x = 159,821.52 × 68,090.64 - Step 4: Simplify right side
115,827.60x = 10,882,349,582.57 - Step 5: Solve for x
x = 10,882,349,582.57/115,827.60 - Step 6: Final answer
x = 93,952.99
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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.