Finding the Fourth Proportional to 81,028.96, 121,543.44 and 21,864.63
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Solution
The fourth proportional to 81,028.96, 121,543.44 and 21,864.63 is: 32,796.95
Step by Step Solution
- Step 1: Write the proportion equation
81,028.96 : 121,543.44 = 21,864.63 : x - Step 2: Convert to fraction form
81,028.96/121,543.44 = 21,864.63/x - Step 3: Cross multiply
81,028.96x = 121,543.44 × 21,864.63 - Step 4: Simplify right side
81,028.96x = 2,657,502,344.53 - Step 5: Solve for x
x = 2,657,502,344.53/81,028.96 - Step 6: Final answer
x = 32,796.95
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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.