Finding the Fourth Proportional to 74,943.80, 112,415.70 and 39,951.80
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Solution
The fourth proportional to 74,943.80, 112,415.70 and 39,951.80 is: 59,927.70
Step by Step Solution
- Step 1: Write the proportion equation
74,943.80 : 112,415.70 = 39,951.80 : x - Step 2: Convert to fraction form
74,943.80/112,415.70 = 39,951.80/x - Step 3: Cross multiply
74,943.80x = 112,415.70 × 39,951.80 - Step 4: Simplify right side
74,943.80x = 4,491,209,563.26 - Step 5: Solve for x
x = 4,491,209,563.26/74,943.80 - Step 6: Final answer
x = 59,927.70
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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.