Finding the Fourth Proportional to 72,473.67, 108,705.65 and 19,878.75
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Solution
The fourth proportional to 72,473.67, 108,705.65 and 19,878.75 is: 29,816.79
Step by Step Solution
- Step 1: Write the proportion equation
72,473.67 : 108,705.65 = 19,878.75 : x - Step 2: Convert to fraction form
72,473.67/108,705.65 = 19,878.75/x - Step 3: Cross multiply
72,473.67x = 108,705.65 × 19,878.75 - Step 4: Simplify right side
72,473.67x = 2,160,932,340.54 - Step 5: Solve for x
x = 2,160,932,340.54/72,473.67 - Step 6: Final answer
x = 29,816.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.