Finding the Fourth Proportional to 76,905.80, 115,358.70 and 76,905.80
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Solution
The fourth proportional to 76,905.80, 115,358.70 and 76,905.80 is: 115,358.70
Step by Step Solution
- Step 1: Write the proportion equation
76,905.80 : 115,358.70 = 76,905.80 : x - Step 2: Convert to fraction form
76,905.80/115,358.70 = 76,905.80/x - Step 3: Cross multiply
76,905.80x = 115,358.70 × 76,905.80 - Step 4: Simplify right side
76,905.80x = 8,871,753,110.46 - Step 5: Solve for x
x = 8,871,753,110.46/76,905.80 - Step 6: Final answer
x = 115,358.70
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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.