Finding the Fourth Proportional to 79,240.80, 118,787.16 and 39,751.68
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Solution
The fourth proportional to 79,240.80, 118,787.16 and 39,751.68 is: 59,590.38
Step by Step Solution
- Step 1: Write the proportion equation
79,240.80 : 118,787.16 = 39,751.68 : x - Step 2: Convert to fraction form
79,240.80/118,787.16 = 39,751.68/x - Step 3: Cross multiply
79,240.80x = 118,787.16 × 39,751.68 - Step 4: Simplify right side
79,240.80x = 4,721,989,172.43 - Step 5: Solve for x
x = 4,721,989,172.43/79,240.80 - Step 6: Final answer
x = 59,590.38
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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.