Finding the Fourth Proportional to 78,979.32, 118,475.10 and 26,388.99
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Solution
The fourth proportional to 78,979.32, 118,475.10 and 26,388.99 is: 39,585.53
Step by Step Solution
- Step 1: Write the proportion equation
78,979.32 : 118,475.10 = 26,388.99 : x - Step 2: Convert to fraction form
78,979.32/118,475.10 = 26,388.99/x - Step 3: Cross multiply
78,979.32x = 118,475.10 × 26,388.99 - Step 4: Simplify right side
78,979.32x = 3,126,438,229.15 - Step 5: Solve for x
x = 3,126,438,229.15/78,979.32 - Step 6: Final answer
x = 39,585.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.