Finding the Fourth Proportional to 81,342.18, 112,256.64 and 45,532.08
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Solution
The fourth proportional to 81,342.18, 112,256.64 and 45,532.08 is: 62,836.75
Step by Step Solution
- Step 1: Write the proportion equation
81,342.18 : 112,256.64 = 45,532.08 : x - Step 2: Convert to fraction form
81,342.18/112,256.64 = 45,532.08/x - Step 3: Cross multiply
81,342.18x = 112,256.64 × 45,532.08 - Step 4: Simplify right side
81,342.18x = 5,111,278,313.01 - Step 5: Solve for x
x = 5,111,278,313.01/81,342.18 - Step 6: Final answer
x = 62,836.75
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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.