Finding the Fourth Proportional to 70,889.63, 106,334.07 and 20,969.99
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Solution
The fourth proportional to 70,889.63, 106,334.07 and 20,969.99 is: 31,454.87
Step by Step Solution
- Step 1: Write the proportion equation
70,889.63 : 106,334.07 = 20,969.99 : x - Step 2: Convert to fraction form
70,889.63/106,334.07 = 20,969.99/x - Step 3: Cross multiply
70,889.63x = 106,334.07 × 20,969.99 - Step 4: Simplify right side
70,889.63x = 2,229,824,173.00 - Step 5: Solve for x
x = 2,229,824,173.00/70,889.63 - Step 6: Final answer
x = 31,454.87
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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.