Finding the Fourth Proportional to 78,219.24, 107,934.56 and 48,005.84
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Solution
The fourth proportional to 78,219.24, 107,934.56 and 48,005.84 is: 66,243.15
Step by Step Solution
- Step 1: Write the proportion equation
78,219.24 : 107,934.56 = 48,005.84 : x - Step 2: Convert to fraction form
78,219.24/107,934.56 = 48,005.84/x - Step 3: Cross multiply
78,219.24x = 107,934.56 × 48,005.84 - Step 4: Simplify right side
78,219.24x = 5,181,489,217.83 - Step 5: Solve for x
x = 5,181,489,217.83/78,219.24 - Step 6: Final answer
x = 66,243.15
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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.