Finding the Fourth Proportional to 71,347.80, 107,021.70 and 66,973.80
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Solution
The fourth proportional to 71,347.80, 107,021.70 and 66,973.80 is: 100,460.70
Step by Step Solution
- Step 1: Write the proportion equation
71,347.80 : 107,021.70 = 66,973.80 : x - Step 2: Convert to fraction form
71,347.80/107,021.70 = 66,973.80/x - Step 3: Cross multiply
71,347.80x = 107,021.70 × 66,973.80 - Step 4: Simplify right side
71,347.80x = 7,167,649,931.46 - Step 5: Solve for x
x = 7,167,649,931.46/71,347.80 - Step 6: Final answer
x = 100,460.70
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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.