Finding the Fourth Proportional to 90,678.21, 125,133.39 and 50,390.02
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Solution
The fourth proportional to 90,678.21, 125,133.39 and 50,390.02 is: 69,536.82
Step by Step Solution
- Step 1: Write the proportion equation
90,678.21 : 125,133.39 = 50,390.02 : x - Step 2: Convert to fraction form
90,678.21/125,133.39 = 50,390.02/x - Step 3: Cross multiply
90,678.21x = 125,133.39 × 50,390.02 - Step 4: Simplify right side
90,678.21x = 6,305,474,024.77 - Step 5: Solve for x
x = 6,305,474,024.77/90,678.21 - Step 6: Final answer
x = 69,536.82
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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.