Finding the Fourth Proportional to 74,861.83, 103,304.91 and 40,863.57
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Solution
The fourth proportional to 74,861.83, 103,304.91 and 40,863.57 is: 56,389.32
Step by Step Solution
- Step 1: Write the proportion equation
74,861.83 : 103,304.91 = 40,863.57 : x - Step 2: Convert to fraction form
74,861.83/103,304.91 = 40,863.57/x - Step 3: Cross multiply
74,861.83x = 103,304.91 × 40,863.57 - Step 4: Simplify right side
74,861.83x = 4,221,407,421.13 - Step 5: Solve for x
x = 4,221,407,421.13/74,861.83 - Step 6: Final answer
x = 56,389.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.