Finding the Fourth Proportional to 81,479.68, 122,406.64 and 57,519.08
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Solution
The fourth proportional to 81,479.68, 122,406.64 and 57,519.08 is: 86,410.71
Step by Step Solution
- Step 1: Write the proportion equation
81,479.68 : 122,406.64 = 57,519.08 : x - Step 2: Convert to fraction form
81,479.68/122,406.64 = 57,519.08/x - Step 3: Cross multiply
81,479.68x = 122,406.64 × 57,519.08 - Step 4: Simplify right side
81,479.68x = 7,040,717,318.69 - Step 5: Solve for x
x = 7,040,717,318.69/81,479.68 - Step 6: Final answer
x = 86,410.71
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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.