Finding the Fourth Proportional to 79,530.28, 119,295.42 and 77,780.68
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Solution
The fourth proportional to 79,530.28, 119,295.42 and 77,780.68 is: 116,671.02
Step by Step Solution
- Step 1: Write the proportion equation
79,530.28 : 119,295.42 = 77,780.68 : x - Step 2: Convert to fraction form
79,530.28/119,295.42 = 77,780.68/x - Step 3: Cross multiply
79,530.28x = 119,295.42 × 77,780.68 - Step 4: Simplify right side
79,530.28x = 9,278,878,888.49 - Step 5: Solve for x
x = 9,278,878,888.49/79,530.28 - Step 6: Final answer
x = 116,671.02
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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.