Finding the Fourth Proportional to 71,242.76, 106,888.70 and 31,827.08
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Solution
The fourth proportional to 71,242.76, 106,888.70 and 31,827.08 is: 47,751.59
Step by Step Solution
- Step 1: Write the proportion equation
71,242.76 : 106,888.70 = 31,827.08 : x - Step 2: Convert to fraction form
71,242.76/106,888.70 = 31,827.08/x - Step 3: Cross multiply
71,242.76x = 106,888.70 × 31,827.08 - Step 4: Simplify right side
71,242.76x = 3,401,955,206.00 - Step 5: Solve for x
x = 3,401,955,206.00/71,242.76 - Step 6: Final answer
x = 47,751.59
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1.5x scale
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.