Finding the Fourth Proportional to 79,742.90, 119,630.55 and 27,157.70
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Solution
The fourth proportional to 79,742.90, 119,630.55 and 27,157.70 is: 40,742.07
Step by Step Solution
- Step 1: Write the proportion equation
79,742.90 : 119,630.55 = 27,157.70 : x - Step 2: Convert to fraction form
79,742.90/119,630.55 = 27,157.70/x - Step 3: Cross multiply
79,742.90x = 119,630.55 × 27,157.70 - Step 4: Simplify right side
79,742.90x = 3,248,890,587.74 - Step 5: Solve for x
x = 3,248,890,587.74/79,742.90 - Step 6: Final answer
x = 40,742.07
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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.