Finding the Fourth Proportional to 81,092.74, 121,645.62 and 28,514.02
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Solution
The fourth proportional to 81,092.74, 121,645.62 and 28,514.02 is: 42,773.32
Step by Step Solution
- Step 1: Write the proportion equation
81,092.74 : 121,645.62 = 28,514.02 : x - Step 2: Convert to fraction form
81,092.74/121,645.62 = 28,514.02/x - Step 3: Cross multiply
81,092.74x = 121,645.62 × 28,514.02 - Step 4: Simplify right side
81,092.74x = 3,468,605,641.59 - Step 5: Solve for x
x = 3,468,605,641.59/81,092.74 - Step 6: Final answer
x = 42,773.32
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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.