Finding the Fourth Proportional to 71,089.14, 106,656.74 and 21,169.65
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Solution
The fourth proportional to 71,089.14, 106,656.74 and 21,169.65 is: 31,761.33
Step by Step Solution
- Step 1: Write the proportion equation
71,089.14 : 106,656.74 = 21,169.65 : x - Step 2: Convert to fraction form
71,089.14/106,656.74 = 21,169.65/x - Step 3: Cross multiply
71,089.14x = 106,656.74 × 21,169.65 - Step 4: Simplify right side
71,089.14x = 2,257,885,855.94 - Step 5: Solve for x
x = 2,257,885,855.94/71,089.14 - Step 6: Final answer
x = 31,761.33
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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.