Finding the Fourth Proportional to 81,271.13, 121,875.19 and 27,952.97
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Solution
The fourth proportional to 81,271.13, 121,875.19 and 27,952.97 is: 41,918.62
Step by Step Solution
- Step 1: Write the proportion equation
81,271.13 : 121,875.19 = 27,952.97 : x - Step 2: Convert to fraction form
81,271.13/121,875.19 = 27,952.97/x - Step 3: Cross multiply
81,271.13x = 121,875.19 × 27,952.97 - Step 4: Simplify right side
81,271.13x = 3,406,773,764.62 - Step 5: Solve for x
x = 3,406,773,764.62/81,271.13 - Step 6: Final answer
x = 41,918.62
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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.