Finding the Fourth Proportional to 115,768.68, 159,725.52 and 64,776.12
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Solution
The fourth proportional to 115,768.68, 159,725.52 and 64,776.12 is: 89,371.32
Step by Step Solution
- Step 1: Write the proportion equation
115,768.68 : 159,725.52 = 64,776.12 : x - Step 2: Convert to fraction form
115,768.68/159,725.52 = 64,776.12/x - Step 3: Cross multiply
115,768.68x = 159,725.52 × 64,776.12 - Step 4: Simplify right side
115,768.68x = 10,346,399,450.58 - Step 5: Solve for x
x = 10,346,399,450.58/115,768.68 - Step 6: Final answer
x = 89,371.32
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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.