Finding the Fourth Proportional to 88,342.36, 121,911.42 and 58,171.48
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Solution
The fourth proportional to 88,342.36, 121,911.42 and 58,171.48 is: 80,275.96
Step by Step Solution
- Step 1: Write the proportion equation
88,342.36 : 121,911.42 = 58,171.48 : x - Step 2: Convert to fraction form
88,342.36/121,911.42 = 58,171.48/x - Step 3: Cross multiply
88,342.36x = 121,911.42 × 58,171.48 - Step 4: Simplify right side
88,342.36x = 7,091,767,730.30 - Step 5: Solve for x
x = 7,091,767,730.30/88,342.36 - Step 6: Final answer
x = 80,275.96
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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.