Finding the Fourth Proportional to 77,152.58, 115,772.58 and 30,438.26
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Solution
The fourth proportional to 77,152.58, 115,772.58 and 30,438.26 is: 45,674.63
Step by Step Solution
- Step 1: Write the proportion equation
77,152.58 : 115,772.58 = 30,438.26 : x - Step 2: Convert to fraction form
77,152.58/115,772.58 = 30,438.26/x - Step 3: Cross multiply
77,152.58x = 115,772.58 × 30,438.26 - Step 4: Simplify right side
77,152.58x = 3,523,915,890.91 - Step 5: Solve for x
x = 3,523,915,890.91/77,152.58 - Step 6: Final answer
x = 45,674.63
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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.