Finding the Fourth Proportional to 81,224.10, 121,844.29 and 27,909.06
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Solution
The fourth proportional to 81,224.10, 121,844.29 and 27,909.06 is: 41,866.38
Step by Step Solution
- Step 1: Write the proportion equation
81,224.10 : 121,844.29 = 27,909.06 : x - Step 2: Convert to fraction form
81,224.10/121,844.29 = 27,909.06/x - Step 3: Cross multiply
81,224.10x = 121,844.29 × 27,909.06 - Step 4: Simplify right side
81,224.10x = 3,400,559,204.40 - Step 5: Solve for x
x = 3,400,559,204.40/81,224.10 - Step 6: Final answer
x = 41,866.38
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1.5x scale
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.