Finding the Fourth Proportional to 83,656.68, 115,395.54 and 49,642.80
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Solution
The fourth proportional to 83,656.68, 115,395.54 and 49,642.80 is: 68,476.99
Step by Step Solution
- Step 1: Write the proportion equation
83,656.68 : 115,395.54 = 49,642.80 : x - Step 2: Convert to fraction form
83,656.68/115,395.54 = 49,642.80/x - Step 3: Cross multiply
83,656.68x = 115,395.54 × 49,642.80 - Step 4: Simplify right side
83,656.68x = 5,728,557,713.11 - Step 5: Solve for x
x = 5,728,557,713.11/83,656.68 - Step 6: Final answer
x = 68,476.99
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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.