Finding the Fourth Proportional to 90,701.70, 136,052.55 and 53,279.70
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Solution
The fourth proportional to 90,701.70, 136,052.55 and 53,279.70 is: 79,919.55
Step by Step Solution
- Step 1: Write the proportion equation
90,701.70 : 136,052.55 = 53,279.70 : x - Step 2: Convert to fraction form
90,701.70/136,052.55 = 53,279.70/x - Step 3: Cross multiply
90,701.70x = 136,052.55 × 53,279.70 - Step 4: Simplify right side
90,701.70x = 7,248,839,048.24 - Step 5: Solve for x
x = 7,248,839,048.24/90,701.70 - Step 6: Final answer
x = 79,919.55
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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.