Finding the Fourth Proportional to 76,943.05, 106,186.74 and 42,958.21
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Solution
The fourth proportional to 76,943.05, 106,186.74 and 42,958.21 is: 59,285.31
Step by Step Solution
- Step 1: Write the proportion equation
76,943.05 : 106,186.74 = 42,958.21 : x - Step 2: Convert to fraction form
76,943.05/106,186.74 = 42,958.21/x - Step 3: Cross multiply
76,943.05x = 106,186.74 × 42,958.21 - Step 4: Simplify right side
76,943.05x = 4,561,592,276.14 - Step 5: Solve for x
x = 4,561,592,276.14/76,943.05 - Step 6: Final answer
x = 59,285.31
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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.