Finding the Fourth Proportional to 70,887.13, 106,351.47 and 20,968.56
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Solution
The fourth proportional to 70,887.13, 106,351.47 and 20,968.56 is: 31,458.99
Step by Step Solution
- Step 1: Write the proportion equation
70,887.13 : 106,351.47 = 20,968.56 : x - Step 2: Convert to fraction form
70,887.13/106,351.47 = 20,968.56/x - Step 3: Cross multiply
70,887.13x = 106,351.47 × 20,968.56 - Step 4: Simplify right side
70,887.13x = 2,230,037,179.78 - Step 5: Solve for x
x = 2,230,037,179.78/70,887.13 - Step 6: Final answer
x = 31,458.99
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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.