Finding the Fourth Proportional to 98,642.96, 136,128.28 and 53,321.82
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Solution
The fourth proportional to 98,642.96, 136,128.28 and 53,321.82 is: 73,584.65
Step by Step Solution
- Step 1: Write the proportion equation
98,642.96 : 136,128.28 = 53,321.82 : x - Step 2: Convert to fraction form
98,642.96/136,128.28 = 53,321.82/x - Step 3: Cross multiply
98,642.96x = 136,128.28 × 53,321.82 - Step 4: Simplify right side
98,642.96x = 7,258,607,643.07 - Step 5: Solve for x
x = 7,258,607,643.07/98,642.96 - Step 6: Final answer
x = 73,584.65
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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.