Finding the Fourth Proportional to 84,005.70, 125,964.80 and 39,620.54
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Solution
The fourth proportional to 84,005.70, 125,964.80 and 39,620.54 is: 59,410.17
Step by Step Solution
- Step 1: Write the proportion equation
84,005.70 : 125,964.80 = 39,620.54 : x - Step 2: Convert to fraction form
84,005.70/125,964.80 = 39,620.54/x - Step 3: Cross multiply
84,005.70x = 125,964.80 × 39,620.54 - Step 4: Simplify right side
84,005.70x = 4,990,792,569.07 - Step 5: Solve for x
x = 4,990,792,569.07/84,005.70 - Step 6: Final answer
x = 59,410.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.