Finding the Fourth Proportional to 76,929.80, 115,446.30 and 27,009.80
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Solution
The fourth proportional to 76,929.80, 115,446.30 and 27,009.80 is: 40,532.82
Step by Step Solution
- Step 1: Write the proportion equation
76,929.80 : 115,446.30 = 27,009.80 : x - Step 2: Convert to fraction form
76,929.80/115,446.30 = 27,009.80/x - Step 3: Cross multiply
76,929.80x = 115,446.30 × 27,009.80 - Step 4: Simplify right side
76,929.80x = 3,118,181,473.74 - Step 5: Solve for x
x = 3,118,181,473.74/76,929.80 - Step 6: Final answer
x = 40,532.82
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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.