Finding the Fourth Proportional to 76,905.40, 115,358.10 and 27,041.80
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Solution
The fourth proportional to 76,905.40, 115,358.10 and 27,041.80 is: 40,562.70
Step by Step Solution
- Step 1: Write the proportion equation
76,905.40 : 115,358.10 = 27,041.80 : x - Step 2: Convert to fraction form
76,905.40/115,358.10 = 27,041.80/x - Step 3: Cross multiply
76,905.40x = 115,358.10 × 27,041.80 - Step 4: Simplify right side
76,905.40x = 3,119,490,668.58 - Step 5: Solve for x
x = 3,119,490,668.58/76,905.40 - Step 6: Final answer
x = 40,562.70
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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.