Finding the Fourth Proportional to 98,719.74, 136,232.91 and 53,397.81
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Solution
The fourth proportional to 98,719.74, 136,232.91 and 53,397.81 is: 73,688.80
Step by Step Solution
- Step 1: Write the proportion equation
98,719.74 : 136,232.91 = 53,397.81 : x - Step 2: Convert to fraction form
98,719.74/136,232.91 = 53,397.81/x - Step 3: Cross multiply
98,719.74x = 136,232.91 × 53,397.81 - Step 4: Simplify right side
98,719.74x = 7,274,539,043.93 - Step 5: Solve for x
x = 7,274,539,043.93/98,719.74 - Step 6: Final answer
x = 73,688.80
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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.