Finding the Fourth Proportional to 78,135.63, 107,820.77 and 44,147.07
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Solution
The fourth proportional to 78,135.63, 107,820.77 and 44,147.07 is: 60,919.34
Step by Step Solution
- Step 1: Write the proportion equation
78,135.63 : 107,820.77 = 44,147.07 : x - Step 2: Convert to fraction form
78,135.63/107,820.77 = 44,147.07/x - Step 3: Cross multiply
78,135.63x = 107,820.77 × 44,147.07 - Step 4: Simplify right side
78,135.63x = 4,759,970,859.91 - Step 5: Solve for x
x = 4,759,970,859.91/78,135.63 - Step 6: Final answer
x = 60,919.34
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1.5x scale
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.