Finding the Fourth Proportional to 81,112.42, 121,671.98 and 27,840.99
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Solution
The fourth proportional to 81,112.42, 121,671.98 and 27,840.99 is: 41,762.63
Step by Step Solution
- Step 1: Write the proportion equation
81,112.42 : 121,671.98 = 27,840.99 : x - Step 2: Convert to fraction form
81,112.42/121,671.98 = 27,840.99/x - Step 3: Cross multiply
81,112.42x = 121,671.98 × 27,840.99 - Step 4: Simplify right side
81,112.42x = 3,387,468,378.46 - Step 5: Solve for x
x = 3,387,468,378.46/81,112.42 - Step 6: Final answer
x = 41,762.63
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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.