Finding the Fourth Proportional to 81,913.68, 122,899.56 and 46,882.80
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Solution
The fourth proportional to 81,913.68, 122,899.56 and 46,882.80 is: 70,340.82
Step by Step Solution
- Step 1: Write the proportion equation
81,913.68 : 122,899.56 = 46,882.80 : x - Step 2: Convert to fraction form
81,913.68/122,899.56 = 46,882.80/x - Step 3: Cross multiply
81,913.68x = 122,899.56 × 46,882.80 - Step 4: Simplify right side
81,913.68x = 5,761,875,491.57 - Step 5: Solve for x
x = 5,761,875,491.57/81,913.68 - Step 6: Final answer
x = 70,340.82
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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.