Finding the Fourth Proportional to 99,450.46, 137,237.43 and 54,128.53
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Solution
The fourth proportional to 99,450.46, 137,237.43 and 54,128.53 is: 74,695.09
Step by Step Solution
- Step 1: Write the proportion equation
99,450.46 : 137,237.43 = 54,128.53 : x - Step 2: Convert to fraction form
99,450.46/137,237.43 = 54,128.53/x - Step 3: Cross multiply
99,450.46x = 137,237.43 × 54,128.53 - Step 4: Simplify right side
99,450.46x = 7,428,460,721.41 - Step 5: Solve for x
x = 7,428,460,721.41/99,450.46 - Step 6: Final answer
x = 74,695.09
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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.