Finding the Fourth Proportional to 98,126.20, 135,406.44 and 55,684.73
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Solution
The fourth proportional to 98,126.20, 135,406.44 and 55,684.73 is: 76,840.55
Step by Step Solution
- Step 1: Write the proportion equation
98,126.20 : 135,406.44 = 55,684.73 : x - Step 2: Convert to fraction form
98,126.20/135,406.44 = 55,684.73/x - Step 3: Cross multiply
98,126.20x = 135,406.44 × 55,684.73 - Step 4: Simplify right side
98,126.20x = 7,540,070,773.24 - Step 5: Solve for x
x = 7,540,070,773.24/98,126.20 - Step 6: Final answer
x = 76,840.55
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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.