Finding the Fourth Proportional to 72,071.97, 107,368.02 and 68,833.54
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Solution
The fourth proportional to 72,071.97, 107,368.02 and 68,833.54 is: 102,543.62
Step by Step Solution
- Step 1: Write the proportion equation
72,071.97 : 107,368.02 = 68,833.54 : x - Step 2: Convert to fraction form
72,071.97/107,368.02 = 68,833.54/x - Step 3: Cross multiply
72,071.97x = 107,368.02 × 68,833.54 - Step 4: Simplify right side
72,071.97x = 7,390,520,925.22 - Step 5: Solve for x
x = 7,390,520,925.22/72,071.97 - Step 6: Final answer
x = 102,543.62
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.