Finding the Fourth Proportional to 99,754.40, 137,656.21 and 54,429.68
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Solution
The fourth proportional to 99,754.40, 137,656.21 and 54,429.68 is: 75,110.31
Step by Step Solution
- Step 1: Write the proportion equation
99,754.40 : 137,656.21 = 54,429.68 : x - Step 2: Convert to fraction form
99,754.40/137,656.21 = 54,429.68/x - Step 3: Cross multiply
99,754.40x = 137,656.21 × 54,429.68 - Step 4: Simplify right side
99,754.40x = 7,492,583,460.31 - Step 5: Solve for x
x = 7,492,583,460.31/99,754.40 - Step 6: Final answer
x = 75,110.31
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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.