Finding the Fourth Proportional to 115,695.36, 159,657.84 and 64,709.28
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Solution
The fourth proportional to 115,695.36, 159,657.84 and 64,709.28 is: 89,297.82
Step by Step Solution
- Step 1: Write the proportion equation
115,695.36 : 159,657.84 = 64,709.28 : x - Step 2: Convert to fraction form
115,695.36/159,657.84 = 64,709.28/x - Step 3: Cross multiply
115,695.36x = 159,657.84 × 64,709.28 - Step 4: Simplify right side
115,695.36x = 10,331,343,872.76 - Step 5: Solve for x
x = 10,331,343,872.76/115,695.36 - Step 6: Final answer
x = 89,297.82
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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.