Finding the Fourth Proportional to 98,430.19, 135,833.66 and 53,718.19
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Solution
The fourth proportional to 98,430.19, 135,833.66 and 53,718.19 is: 74,131.10
Step by Step Solution
- Step 1: Write the proportion equation
98,430.19 : 135,833.66 = 53,718.19 : x - Step 2: Convert to fraction form
98,430.19/135,833.66 = 53,718.19/x - Step 3: Cross multiply
98,430.19x = 135,833.66 × 53,718.19 - Step 4: Simplify right side
98,430.19x = 7,296,737,949.54 - Step 5: Solve for x
x = 7,296,737,949.54/98,430.19 - Step 6: Final answer
x = 74,131.10
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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.