Finding the Fourth Proportional to 99,977.19, 138,003.26 and 57,552.63
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Solution
The fourth proportional to 99,977.19, 138,003.26 and 57,552.63 is: 79,442.62
Step by Step Solution
- Step 1: Write the proportion equation
99,977.19 : 138,003.26 = 57,552.63 : x - Step 2: Convert to fraction form
99,977.19/138,003.26 = 57,552.63/x - Step 3: Cross multiply
99,977.19x = 138,003.26 × 57,552.63 - Step 4: Simplify right side
99,977.19x = 7,942,450,273.81 - Step 5: Solve for x
x = 7,942,450,273.81/99,977.19 - Step 6: Final answer
x = 79,442.62
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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.