Finding the Fourth Proportional to 81,240.16, 121,862.72 and 22,077.08
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Solution
The fourth proportional to 81,240.16, 121,862.72 and 22,077.08 is: 33,116.29
Step by Step Solution
- Step 1: Write the proportion equation
81,240.16 : 121,862.72 = 22,077.08 : x - Step 2: Convert to fraction form
81,240.16/121,862.72 = 22,077.08/x - Step 3: Cross multiply
81,240.16x = 121,862.72 × 22,077.08 - Step 4: Simplify right side
81,240.16x = 2,690,372,908.07 - Step 5: Solve for x
x = 2,690,372,908.07/81,240.16 - Step 6: Final answer
x = 33,116.29
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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.