Finding the Fourth Proportional to 79,345.26, 118,939.05 and 39,781.62
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Solution
The fourth proportional to 79,345.26, 118,939.05 and 39,781.62 is: 59,632.90
Step by Step Solution
- Step 1: Write the proportion equation
79,345.26 : 118,939.05 = 39,781.62 : x - Step 2: Convert to fraction form
79,345.26/118,939.05 = 39,781.62/x - Step 3: Cross multiply
79,345.26x = 118,939.05 × 39,781.62 - Step 4: Simplify right side
79,345.26x = 4,731,588,090.26 - Step 5: Solve for x
x = 4,731,588,090.26/79,345.26 - Step 6: Final answer
x = 59,632.90
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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.