Finding the Fourth Proportional to 77,257.80, 115,959.60 and 47,733.30
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Solution
The fourth proportional to 77,257.80, 115,959.60 and 47,733.30 is: 71,644.99
Step by Step Solution
- Step 1: Write the proportion equation
77,257.80 : 115,959.60 = 47,733.30 : x - Step 2: Convert to fraction form
77,257.80/115,959.60 = 47,733.30/x - Step 3: Cross multiply
77,257.80x = 115,959.60 × 47,733.30 - Step 4: Simplify right side
77,257.80x = 5,535,134,374.68 - Step 5: Solve for x
x = 5,535,134,374.68/77,257.80 - Step 6: Final answer
x = 71,644.99
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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.