Finding the Fourth Proportional to 76,905.84, 115,357.68 and 24,319.20
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Solution
The fourth proportional to 76,905.84, 115,357.68 and 24,319.20 is: 36,478.46
Step by Step Solution
- Step 1: Write the proportion equation
76,905.84 : 115,357.68 = 24,319.20 : x - Step 2: Convert to fraction form
76,905.84/115,357.68 = 24,319.20/x - Step 3: Cross multiply
76,905.84x = 115,357.68 × 24,319.20 - Step 4: Simplify right side
76,905.84x = 2,805,406,491.46 - Step 5: Solve for x
x = 2,805,406,491.46/76,905.84 - Step 6: Final answer
x = 36,478.46
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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.