Finding the Fourth Proportional to 77,754.61, 107,311.65 and 43,769.68
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Solution
The fourth proportional to 77,754.61, 107,311.65 and 43,769.68 is: 60,407.95
Step by Step Solution
- Step 1: Write the proportion equation
77,754.61 : 107,311.65 = 43,769.68 : x - Step 2: Convert to fraction form
77,754.61/107,311.65 = 43,769.68/x - Step 3: Cross multiply
77,754.61x = 107,311.65 × 43,769.68 - Step 4: Simplify right side
77,754.61x = 4,696,996,580.77 - Step 5: Solve for x
x = 4,696,996,580.77/77,754.61 - Step 6: Final answer
x = 60,407.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.