Finding the Fourth Proportional to 76,880.88, 115,282.44 and 39,432.96
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Solution
The fourth proportional to 76,880.88, 115,282.44 and 39,432.96 is: 59,129.50
Step by Step Solution
- Step 1: Write the proportion equation
76,880.88 : 115,282.44 = 39,432.96 : x - Step 2: Convert to fraction form
76,880.88/115,282.44 = 39,432.96/x - Step 3: Cross multiply
76,880.88x = 115,282.44 × 39,432.96 - Step 4: Simplify right side
76,880.88x = 4,545,927,845.22 - Step 5: Solve for x
x = 4,545,927,845.22/76,880.88 - Step 6: Final answer
x = 59,129.50
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1.5x scale
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.