Finding the Fourth Proportional to 81,801.29, 112,886.26 and 45,990.99
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Solution
The fourth proportional to 81,801.29, 112,886.26 and 45,990.99 is: 63,467.83
Step by Step Solution
- Step 1: Write the proportion equation
81,801.29 : 112,886.26 = 45,990.99 : x - Step 2: Convert to fraction form
81,801.29/112,886.26 = 45,990.99/x - Step 3: Cross multiply
81,801.29x = 112,886.26 × 45,990.99 - Step 4: Simplify right side
81,801.29x = 5,191,750,739.82 - Step 5: Solve for x
x = 5,191,750,739.82/81,801.29 - Step 6: Final answer
x = 63,467.83
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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.