Finding the Fourth Proportional to 87,921.96, 121,326.56 and 56,087.44
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Solution
The fourth proportional to 87,921.96, 121,326.56 and 56,087.44 is: 77,397.00
Step by Step Solution
- Step 1: Write the proportion equation
87,921.96 : 121,326.56 = 56,087.44 : x - Step 2: Convert to fraction form
87,921.96/121,326.56 = 56,087.44/x - Step 3: Cross multiply
87,921.96x = 121,326.56 × 56,087.44 - Step 4: Simplify right side
87,921.96x = 6,804,895,780.98 - Step 5: Solve for x
x = 6,804,895,780.98/87,921.96 - Step 6: Final answer
x = 77,397.00
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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.