Finding the Fourth Proportional to 106,426.36, 159,642.88 and 39,853.80
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Solution
The fourth proportional to 106,426.36, 159,642.88 and 39,853.80 is: 59,781.95
Step by Step Solution
- Step 1: Write the proportion equation
106,426.36 : 159,642.88 = 39,853.80 : x - Step 2: Convert to fraction form
106,426.36/159,642.88 = 39,853.80/x - Step 3: Cross multiply
106,426.36x = 159,642.88 × 39,853.80 - Step 4: Simplify right side
106,426.36x = 6,362,375,410.94 - Step 5: Solve for x
x = 6,362,375,410.94/106,426.36 - Step 6: Final answer
x = 59,781.95
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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.