Finding the Fourth Proportional to 81,277.98, 121,920.15 and 25,113.09
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Solution
The fourth proportional to 81,277.98, 121,920.15 and 25,113.09 is: 37,670.62
Step by Step Solution
- Step 1: Write the proportion equation
81,277.98 : 121,920.15 = 25,113.09 : x - Step 2: Convert to fraction form
81,277.98/121,920.15 = 25,113.09/x - Step 3: Cross multiply
81,277.98x = 121,920.15 × 25,113.09 - Step 4: Simplify right side
81,277.98x = 3,061,791,699.76 - Step 5: Solve for x
x = 3,061,791,699.76/81,277.98 - Step 6: Final answer
x = 37,670.62
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1.5x scale
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.