Finding the Fourth Proportional to 77,232.60, 115,703.10 and 39,664.80
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Solution
The fourth proportional to 77,232.60, 115,703.10 and 39,664.80 is: 59,422.32
Step by Step Solution
- Step 1: Write the proportion equation
77,232.60 : 115,703.10 = 39,664.80 : x - Step 2: Convert to fraction form
77,232.60/115,703.10 = 39,664.80/x - Step 3: Cross multiply
77,232.60x = 115,703.10 × 39,664.80 - Step 4: Simplify right side
77,232.60x = 4,589,340,320.88 - Step 5: Solve for x
x = 4,589,340,320.88/77,232.60 - Step 6: Final answer
x = 59,422.32
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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.