Finding the Fourth Proportional to 83,340.80, 115,064.08 and 74,372.88
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Solution
The fourth proportional to 83,340.80, 115,064.08 and 74,372.88 is: 102,682.56
Step by Step Solution
- Step 1: Write the proportion equation
83,340.80 : 115,064.08 = 74,372.88 : x - Step 2: Convert to fraction form
83,340.80/115,064.08 = 74,372.88/x - Step 3: Cross multiply
83,340.80x = 115,064.08 × 74,372.88 - Step 4: Simplify right side
83,340.80x = 8,557,647,014.15 - Step 5: Solve for x
x = 8,557,647,014.15/83,340.80 - Step 6: Final answer
x = 102,682.56
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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.