Finding the Fourth Proportional to 70,806.12, 106,282.99 and 31,390.91
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Solution
The fourth proportional to 70,806.12, 106,282.99 and 31,390.91 is: 47,119.09
Step by Step Solution
- Step 1: Write the proportion equation
70,806.12 : 106,282.99 = 31,390.91 : x - Step 2: Convert to fraction form
70,806.12/106,282.99 = 31,390.91/x - Step 3: Cross multiply
70,806.12x = 106,282.99 × 31,390.91 - Step 4: Simplify right side
70,806.12x = 3,336,319,503.43 - Step 5: Solve for x
x = 3,336,319,503.43/70,806.12 - Step 6: Final answer
x = 47,119.09
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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.