Finding the Fourth Proportional to 115,786.08, 159,782.40 and 64,795.68
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Solution
The fourth proportional to 115,786.08, 159,782.40 and 64,795.68 is: 89,416.70
Step by Step Solution
- Step 1: Write the proportion equation
115,786.08 : 159,782.40 = 64,795.68 : x - Step 2: Convert to fraction form
115,786.08/159,782.40 = 64,795.68/x - Step 3: Cross multiply
115,786.08x = 159,782.40 × 64,795.68 - Step 4: Simplify right side
115,786.08x = 10,353,209,260.03 - Step 5: Solve for x
x = 10,353,209,260.03/115,786.08 - Step 6: Final answer
x = 89,416.70
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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.