Finding the Fourth Proportional to 81,258.14, 121,902.45 and 36,888.02
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Solution
The fourth proportional to 81,258.14, 121,902.45 and 36,888.02 is: 55,338.95
Step by Step Solution
- Step 1: Write the proportion equation
81,258.14 : 121,902.45 = 36,888.02 : x - Step 2: Convert to fraction form
81,258.14/121,902.45 = 36,888.02/x - Step 3: Cross multiply
81,258.14x = 121,902.45 × 36,888.02 - Step 4: Simplify right side
81,258.14x = 4,496,740,013.65 - Step 5: Solve for x
x = 4,496,740,013.65/81,258.14 - Step 6: Final answer
x = 55,338.95
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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.