Finding the Fourth Proportional to 78,215.97, 107,944.28 and 44,231.61
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Solution
The fourth proportional to 78,215.97, 107,944.28 and 44,231.61 is: 61,043.15
Step by Step Solution
- Step 1: Write the proportion equation
78,215.97 : 107,944.28 = 44,231.61 : x - Step 2: Convert to fraction form
78,215.97/107,944.28 = 44,231.61/x - Step 3: Cross multiply
78,215.97x = 107,944.28 × 44,231.61 - Step 4: Simplify right side
78,215.97x = 4,774,549,073.53 - Step 5: Solve for x
x = 4,774,549,073.53/78,215.97 - Step 6: Final answer
x = 61,043.15
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.