Finding the Fourth Proportional to 78,432.99, 108,231.84 and 44,442.15
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Solution
The fourth proportional to 78,432.99, 108,231.84 and 44,442.15 is: 61,326.95
Step by Step Solution
- Step 1: Write the proportion equation
78,432.99 : 108,231.84 = 44,442.15 : x - Step 2: Convert to fraction form
78,432.99/108,231.84 = 44,442.15/x - Step 3: Cross multiply
78,432.99x = 108,231.84 × 44,442.15 - Step 4: Simplify right side
78,432.99x = 4,810,055,668.06 - Step 5: Solve for x
x = 4,810,055,668.06/78,432.99 - Step 6: Final answer
x = 61,326.95
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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.