Finding the Fourth Proportional to 99,983.99, 137,981.28 and 54,661.07
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Solution
The fourth proportional to 99,983.99, 137,981.28 and 54,661.07 is: 75,434.12
Step by Step Solution
- Step 1: Write the proportion equation
99,983.99 : 137,981.28 = 54,661.07 : x - Step 2: Convert to fraction form
99,983.99/137,981.28 = 54,661.07/x - Step 3: Cross multiply
99,983.99x = 137,981.28 × 54,661.07 - Step 4: Simplify right side
99,983.99x = 7,542,204,404.77 - Step 5: Solve for x
x = 7,542,204,404.77/99,983.99 - Step 6: Final answer
x = 75,434.12
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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.