Finding the Fourth Proportional to 98,894.60, 136,474.70 and 53,572.68
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Solution
The fourth proportional to 98,894.60, 136,474.70 and 53,572.68 is: 73,930.38
Step by Step Solution
- Step 1: Write the proportion equation
98,894.60 : 136,474.70 = 53,572.68 : x - Step 2: Convert to fraction form
98,894.60/136,474.70 = 53,572.68/x - Step 3: Cross multiply
98,894.60x = 136,474.70 × 53,572.68 - Step 4: Simplify right side
98,894.60x = 7,311,315,431.20 - Step 5: Solve for x
x = 7,311,315,431.20/98,894.60 - Step 6: Final answer
x = 73,930.38
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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.