Finding the Fourth Proportional to 76,534.75, 114,808.74 and 21,130.75
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Solution
The fourth proportional to 76,534.75, 114,808.74 and 21,130.75 is: 31,697.95
Step by Step Solution
- Step 1: Write the proportion equation
76,534.75 : 114,808.74 = 21,130.75 : x - Step 2: Convert to fraction form
76,534.75/114,808.74 = 21,130.75/x - Step 3: Cross multiply
76,534.75x = 114,808.74 × 21,130.75 - Step 4: Simplify right side
76,534.75x = 2,425,994,782.76 - Step 5: Solve for x
x = 2,425,994,782.76/76,534.75 - Step 6: Final answer
x = 31,697.95
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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.