Finding the Fourth Proportional to 76,839.63, 106,040.57 and 42,847.79
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Solution
The fourth proportional to 76,839.63, 106,040.57 and 42,847.79 is: 59,130.99
Step by Step Solution
- Step 1: Write the proportion equation
76,839.63 : 106,040.57 = 42,847.79 : x - Step 2: Convert to fraction form
76,839.63/106,040.57 = 42,847.79/x - Step 3: Cross multiply
76,839.63x = 106,040.57 × 42,847.79 - Step 4: Simplify right side
76,839.63x = 4,543,603,330.40 - Step 5: Solve for x
x = 4,543,603,330.40/76,839.63 - Step 6: Final answer
x = 59,130.99
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1.5x scale
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.