Finding the Fourth Proportional to 86,438.63, 129,708.98 and 36,515.49
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Solution
The fourth proportional to 86,438.63, 129,708.98 and 36,515.49 is: 54,794.80
Step by Step Solution
- Step 1: Write the proportion equation
86,438.63 : 129,708.98 = 36,515.49 : x - Step 2: Convert to fraction form
86,438.63/129,708.98 = 36,515.49/x - Step 3: Cross multiply
86,438.63x = 129,708.98 × 36,515.49 - Step 4: Simplify right side
86,438.63x = 4,736,386,779.52 - Step 5: Solve for x
x = 4,736,386,779.52/86,438.63 - Step 6: Final answer
x = 54,794.80
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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.