Finding the Fourth Proportional to 83,857.60, 115,717.16 and 46,134.28
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Solution
The fourth proportional to 83,857.60, 115,717.16 and 46,134.28 is: 63,661.83
Step by Step Solution
- Step 1: Write the proportion equation
83,857.60 : 115,717.16 = 46,134.28 : x - Step 2: Convert to fraction form
83,857.60/115,717.16 = 46,134.28/x - Step 3: Cross multiply
83,857.60x = 115,717.16 × 46,134.28 - Step 4: Simplify right side
83,857.60x = 5,338,527,860.24 - Step 5: Solve for x
x = 5,338,527,860.24/83,857.60 - Step 6: Final answer
x = 63,661.83
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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.