Finding the Fourth Proportional to 76,926.20, 115,009.97 and 65,210.70
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Solution
The fourth proportional to 76,926.20, 115,009.97 and 65,210.70 is: 97,494.50
Step by Step Solution
- Step 1: Write the proportion equation
76,926.20 : 115,009.97 = 65,210.70 : x - Step 2: Convert to fraction form
76,926.20/115,009.97 = 65,210.70/x - Step 3: Cross multiply
76,926.20x = 115,009.97 × 65,210.70 - Step 4: Simplify right side
76,926.20x = 7,499,880,755.91 - Step 5: Solve for x
x = 7,499,880,755.91/76,926.20 - Step 6: Final answer
x = 97,494.50
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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.