Finding the Fourth Proportional to 71,393.40, 107,090.10 and 68,671.80
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Solution
The fourth proportional to 71,393.40, 107,090.10 and 68,671.80 is: 103,007.70
Step by Step Solution
- Step 1: Write the proportion equation
71,393.40 : 107,090.10 = 68,671.80 : x - Step 2: Convert to fraction form
71,393.40/107,090.10 = 68,671.80/x - Step 3: Cross multiply
71,393.40x = 107,090.10 × 68,671.80 - Step 4: Simplify right side
71,393.40x = 7,354,069,929.18 - Step 5: Solve for x
x = 7,354,069,929.18/71,393.40 - Step 6: Final answer
x = 103,007.70
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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.