Finding the Fourth Proportional to 88,309.80, 121,894.92 and 54,328.68
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Solution
The fourth proportional to 88,309.80, 121,894.92 and 54,328.68 is: 74,990.43
Step by Step Solution
- Step 1: Write the proportion equation
88,309.80 : 121,894.92 = 54,328.68 : x - Step 2: Convert to fraction form
88,309.80/121,894.92 = 54,328.68/x - Step 3: Cross multiply
88,309.80x = 121,894.92 × 54,328.68 - Step 4: Simplify right side
88,309.80x = 6,622,390,102.31 - Step 5: Solve for x
x = 6,622,390,102.31/88,309.80 - Step 6: Final answer
x = 74,990.43
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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.