Finding the Fourth Proportional to 112,716.76, 155,549.12 and 62,415.76
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Solution
The fourth proportional to 112,716.76, 155,549.12 and 62,415.76 is: 86,133.74
Step by Step Solution
- Step 1: Write the proportion equation
112,716.76 : 155,549.12 = 62,415.76 : x - Step 2: Convert to fraction form
112,716.76/155,549.12 = 62,415.76/x - Step 3: Cross multiply
112,716.76x = 155,549.12 × 62,415.76 - Step 4: Simplify right side
112,716.76x = 9,708,716,542.13 - Step 5: Solve for x
x = 9,708,716,542.13/112,716.76 - Step 6: Final answer
x = 86,133.74
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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.