Finding the Fourth Proportional to 104,983.11, 144,878.95 and 57,236.78
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Solution
The fourth proportional to 104,983.11, 144,878.95 and 57,236.78 is: 78,987.99
Step by Step Solution
- Step 1: Write the proportion equation
104,983.11 : 144,878.95 = 57,236.78 : x - Step 2: Convert to fraction form
104,983.11/144,878.95 = 57,236.78/x - Step 3: Cross multiply
104,983.11x = 144,878.95 × 57,236.78 - Step 4: Simplify right side
104,983.11x = 8,292,404,587.78 - Step 5: Solve for x
x = 8,292,404,587.78/104,983.11 - Step 6: Final answer
x = 78,987.99
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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.