Finding the Fourth Proportional to 87,909.84, 131,880.96 and 28,748.79
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Solution
The fourth proportional to 87,909.84, 131,880.96 and 28,748.79 is: 43,128.48
Step by Step Solution
- Step 1: Write the proportion equation
87,909.84 : 131,880.96 = 28,748.79 : x - Step 2: Convert to fraction form
87,909.84/131,880.96 = 28,748.79/x - Step 3: Cross multiply
87,909.84x = 131,880.96 × 28,748.79 - Step 4: Simplify right side
87,909.84x = 3,791,418,024.04 - Step 5: Solve for x
x = 3,791,418,024.04/87,909.84 - Step 6: Final answer
x = 43,128.48
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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.