Finding the Fourth Proportional to 88,181.18, 121,724.92 and 61,339.26
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Solution
The fourth proportional to 88,181.18, 121,724.92 and 61,339.26 is: 84,672.45
Step by Step Solution
- Step 1: Write the proportion equation
88,181.18 : 121,724.92 = 61,339.26 : x - Step 2: Convert to fraction form
88,181.18/121,724.92 = 61,339.26/x - Step 3: Cross multiply
88,181.18x = 121,724.92 × 61,339.26 - Step 4: Simplify right side
88,181.18x = 7,466,516,516.36 - Step 5: Solve for x
x = 7,466,516,516.36/88,181.18 - Step 6: Final answer
x = 84,672.45
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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.