Finding the Fourth Proportional to 81,624.36, 122,438.46 and 26,220.84
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Solution
The fourth proportional to 81,624.36, 122,438.46 and 26,220.84 is: 39,331.88
Step by Step Solution
- Step 1: Write the proportion equation
81,624.36 : 122,438.46 = 26,220.84 : x - Step 2: Convert to fraction form
81,624.36/122,438.46 = 26,220.84/x - Step 3: Cross multiply
81,624.36x = 122,438.46 × 26,220.84 - Step 4: Simplify right side
81,624.36x = 3,210,439,269.51 - Step 5: Solve for x
x = 3,210,439,269.51/81,624.36 - Step 6: Final answer
x = 39,331.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.