Finding the Fourth Proportional to 76,691.94, 115,037.23 and 19,765.70
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Solution
The fourth proportional to 76,691.94, 115,037.23 and 19,765.70 is: 29,648.37
Step by Step Solution
- Step 1: Write the proportion equation
76,691.94 : 115,037.23 = 19,765.70 : x - Step 2: Convert to fraction form
76,691.94/115,037.23 = 19,765.70/x - Step 3: Cross multiply
76,691.94x = 115,037.23 × 19,765.70 - Step 4: Simplify right side
76,691.94x = 2,273,791,377.01 - Step 5: Solve for x
x = 2,273,791,377.01/76,691.94 - Step 6: Final answer
x = 29,648.37
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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.