Finding the Fourth Proportional to 106,419.12, 159,727.44 and 53,865.84
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Solution
The fourth proportional to 106,419.12, 159,727.44 and 53,865.84 is: 80,848.75
Step by Step Solution
- Step 1: Write the proportion equation
106,419.12 : 159,727.44 = 53,865.84 : x - Step 2: Convert to fraction form
106,419.12/159,727.44 = 53,865.84/x - Step 3: Cross multiply
106,419.12x = 159,727.44 × 53,865.84 - Step 4: Simplify right side
106,419.12x = 8,603,852,726.65 - Step 5: Solve for x
x = 8,603,852,726.65/106,419.12 - Step 6: Final answer
x = 80,848.75
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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.