Finding the Fourth Proportional to 83,880.64, 125,782.07 and 31,276.00
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Solution
The fourth proportional to 83,880.64, 125,782.07 and 31,276.00 is: 46,899.50
Step by Step Solution
- Step 1: Write the proportion equation
83,880.64 : 125,782.07 = 31,276.00 : x - Step 2: Convert to fraction form
83,880.64/125,782.07 = 31,276.00/x - Step 3: Cross multiply
83,880.64x = 125,782.07 × 31,276.00 - Step 4: Simplify right side
83,880.64x = 3,933,959,578.53 - Step 5: Solve for x
x = 3,933,959,578.53/83,880.64 - Step 6: Final answer
x = 46,899.50
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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.