Finding the Fourth Proportional to 115,828.13, 159,833.99 and 64,829.18
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Solution
The fourth proportional to 115,828.13, 159,833.99 and 64,829.18 is: 89,459.33
Step by Step Solution
- Step 1: Write the proportion equation
115,828.13 : 159,833.99 = 64,829.18 : x - Step 2: Convert to fraction form
115,828.13/159,833.99 = 64,829.18/x - Step 3: Cross multiply
115,828.13x = 159,833.99 × 64,829.18 - Step 4: Simplify right side
115,828.13x = 10,361,907,069.49 - Step 5: Solve for x
x = 10,361,907,069.49/115,828.13 - Step 6: Final answer
x = 89,459.33
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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.