Finding the Fourth Proportional to 76,615.98, 114,924.06 and 21,211.98
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Solution
The fourth proportional to 76,615.98, 114,924.06 and 21,211.98 is: 31,817.99
Step by Step Solution
- Step 1: Write the proportion equation
76,615.98 : 114,924.06 = 21,211.98 : x - Step 2: Convert to fraction form
76,615.98/114,924.06 = 21,211.98/x - Step 3: Cross multiply
76,615.98x = 114,924.06 × 21,211.98 - Step 4: Simplify right side
76,615.98x = 2,437,766,862.24 - Step 5: Solve for x
x = 2,437,766,862.24/76,615.98 - Step 6: Final answer
x = 31,817.99
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1.5x scale
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.