Finding the Fourth Proportional to 99,780.24, 137,695.50 and 54,458.94
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Solution
The fourth proportional to 99,780.24, 137,695.50 and 54,458.94 is: 75,152.67
Step by Step Solution
- Step 1: Write the proportion equation
99,780.24 : 137,695.50 = 54,458.94 : x - Step 2: Convert to fraction form
99,780.24/137,695.50 = 54,458.94/x - Step 3: Cross multiply
99,780.24x = 137,695.50 × 54,458.94 - Step 4: Simplify right side
99,780.24x = 7,498,750,972.77 - Step 5: Solve for x
x = 7,498,750,972.77/99,780.24 - Step 6: Final answer
x = 75,152.67
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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.