Finding the Fourth Proportional to 106,424.36, 159,639.88 and 39,851.80
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Solution
The fourth proportional to 106,424.36, 159,639.88 and 39,851.80 is: 59,778.95
Step by Step Solution
- Step 1: Write the proportion equation
106,424.36 : 159,639.88 = 39,851.80 : x - Step 2: Convert to fraction form
106,424.36/159,639.88 = 39,851.80/x - Step 3: Cross multiply
106,424.36x = 159,639.88 × 39,851.80 - Step 4: Simplify right side
106,424.36x = 6,361,936,569.78 - Step 5: Solve for x
x = 6,361,936,569.78/106,424.36 - Step 6: Final answer
x = 59,778.95
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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.