Finding the Fourth Proportional to 78,426.18, 117,525.06 and 36,319.14
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Solution
The fourth proportional to 78,426.18, 117,525.06 and 36,319.14 is: 54,425.82
Step by Step Solution
- Step 1: Write the proportion equation
78,426.18 : 117,525.06 = 36,319.14 : x - Step 2: Convert to fraction form
78,426.18/117,525.06 = 36,319.14/x - Step 3: Cross multiply
78,426.18x = 117,525.06 × 36,319.14 - Step 4: Simplify right side
78,426.18x = 4,268,409,107.65 - Step 5: Solve for x
x = 4,268,409,107.65/78,426.18 - Step 6: Final answer
x = 54,425.82
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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.