Finding the Fourth Proportional to 77,841.28, 107,383.68 and 74,823.52
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Solution
The fourth proportional to 77,841.28, 107,383.68 and 74,823.52 is: 103,220.62
Step by Step Solution
- Step 1: Write the proportion equation
77,841.28 : 107,383.68 = 74,823.52 : x - Step 2: Convert to fraction form
77,841.28/107,383.68 = 74,823.52/x - Step 3: Cross multiply
77,841.28x = 107,383.68 × 74,823.52 - Step 4: Simplify right side
77,841.28x = 8,034,824,928.15 - Step 5: Solve for x
x = 8,034,824,928.15/77,841.28 - Step 6: Final answer
x = 103,220.62
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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.