Finding the Fourth Proportional to 76,885.60, 115,414.80 and 59,432.80
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Solution
The fourth proportional to 76,885.60, 115,414.80 and 59,432.80 is: 89,215.99
Step by Step Solution
- Step 1: Write the proportion equation
76,885.60 : 115,414.80 = 59,432.80 : x - Step 2: Convert to fraction form
76,885.60/115,414.80 = 59,432.80/x - Step 3: Cross multiply
76,885.60x = 115,414.80 × 59,432.80 - Step 4: Simplify right side
76,885.60x = 6,859,424,725.44 - Step 5: Solve for x
x = 6,859,424,725.44/76,885.60 - Step 6: Final answer
x = 89,215.99
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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.