Finding the Fourth Proportional to 85,356.64, 117,831.99 and 49,539.70
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Solution
The fourth proportional to 85,356.64, 117,831.99 and 49,539.70 is: 68,387.90
Step by Step Solution
- Step 1: Write the proportion equation
85,356.64 : 117,831.99 = 49,539.70 : x - Step 2: Convert to fraction form
85,356.64/117,831.99 = 49,539.70/x - Step 3: Cross multiply
85,356.64x = 117,831.99 × 49,539.70 - Step 4: Simplify right side
85,356.64x = 5,837,361,435.00 - Step 5: Solve for x
x = 5,837,361,435.00/85,356.64 - Step 6: Final answer
x = 68,387.90
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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.