Finding the Fourth Proportional to 86,121.12, 118,853.04 and 48,395.28
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Solution
The fourth proportional to 86,121.12, 118,853.04 and 48,395.28 is: 66,788.80
Step by Step Solution
- Step 1: Write the proportion equation
86,121.12 : 118,853.04 = 48,395.28 : x - Step 2: Convert to fraction form
86,121.12/118,853.04 = 48,395.28/x - Step 3: Cross multiply
86,121.12x = 118,853.04 × 48,395.28 - Step 4: Simplify right side
86,121.12x = 5,751,926,149.65 - Step 5: Solve for x
x = 5,751,926,149.65/86,121.12 - Step 6: Final answer
x = 66,788.80
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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.