Finding the Fourth Proportional to 73,142.18, 100,934.77 and 40,877.09
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Solution
The fourth proportional to 73,142.18, 100,934.77 and 40,877.09 is: 56,409.58
Step by Step Solution
- Step 1: Write the proportion equation
73,142.18 : 100,934.77 = 40,877.09 : x - Step 2: Convert to fraction form
73,142.18/100,934.77 = 40,877.09/x - Step 3: Cross multiply
73,142.18x = 100,934.77 × 40,877.09 - Step 4: Simplify right side
73,142.18x = 4,125,919,677.42 - Step 5: Solve for x
x = 4,125,919,677.42/73,142.18 - Step 6: Final answer
x = 56,409.58
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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.