Finding the Fourth Proportional to 87,657.12, 120,957.84 and 51,840.14
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Solution
The fourth proportional to 87,657.12, 120,957.84 and 51,840.14 is: 71,534.07
Step by Step Solution
- Step 1: Write the proportion equation
87,657.12 : 120,957.84 = 51,840.14 : x - Step 2: Convert to fraction form
87,657.12/120,957.84 = 51,840.14/x - Step 3: Cross multiply
87,657.12x = 120,957.84 × 51,840.14 - Step 4: Simplify right side
87,657.12x = 6,270,470,754.91 - Step 5: Solve for x
x = 6,270,470,754.91/87,657.12 - Step 6: Final answer
x = 71,534.07
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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.