Finding the Fourth Proportional to 97,806.40, 134,972.88 and 55,364.08
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Solution
The fourth proportional to 97,806.40, 134,972.88 and 55,364.08 is: 76,402.46
Step by Step Solution
- Step 1: Write the proportion equation
97,806.40 : 134,972.88 = 55,364.08 : x - Step 2: Convert to fraction form
97,806.40/134,972.88 = 55,364.08/x - Step 3: Cross multiply
97,806.40x = 134,972.88 × 55,364.08 - Step 4: Simplify right side
97,806.40x = 7,472,649,326.15 - Step 5: Solve for x
x = 7,472,649,326.15/97,806.40 - Step 6: Final answer
x = 76,402.46
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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.