Finding the Fourth Proportional to 86,371.99, 129,265.36 and 53,113.12
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Solution
The fourth proportional to 86,371.99, 129,265.36 and 53,113.12 is: 79,489.73
Step by Step Solution
- Step 1: Write the proportion equation
86,371.99 : 129,265.36 = 53,113.12 : x - Step 2: Convert to fraction form
86,371.99/129,265.36 = 53,113.12/x - Step 3: Cross multiply
86,371.99x = 129,265.36 × 53,113.12 - Step 4: Simplify right side
86,371.99x = 6,865,686,121.58 - Step 5: Solve for x
x = 6,865,686,121.58/86,371.99 - Step 6: Final answer
x = 79,489.73
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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.