Finding the Fourth Proportional to 81,188.24, 121,476.12 and 47,926.40
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Solution
The fourth proportional to 81,188.24, 121,476.12 and 47,926.40 is: 71,708.82
Step by Step Solution
- Step 1: Write the proportion equation
81,188.24 : 121,476.12 = 47,926.40 : x - Step 2: Convert to fraction form
81,188.24/121,476.12 = 47,926.40/x - Step 3: Cross multiply
81,188.24x = 121,476.12 × 47,926.40 - Step 4: Simplify right side
81,188.24x = 5,821,913,117.57 - Step 5: Solve for x
x = 5,821,913,117.57/81,188.24 - Step 6: Final answer
x = 71,708.82
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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.