Finding the Fourth Proportional to 86,565.13, 129,841.21 and 30,405.73
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Solution
The fourth proportional to 86,565.13, 129,841.21 and 30,405.73 is: 45,606.32
Step by Step Solution
- Step 1: Write the proportion equation
86,565.13 : 129,841.21 = 30,405.73 : x - Step 2: Convert to fraction form
86,565.13/129,841.21 = 30,405.73/x - Step 3: Cross multiply
86,565.13x = 129,841.21 × 30,405.73 - Step 4: Simplify right side
86,565.13x = 3,947,916,774.13 - Step 5: Solve for x
x = 3,947,916,774.13/86,565.13 - Step 6: Final answer
x = 45,606.32
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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.