Finding the Fourth Proportional to 73,719.40, 110,579.10 and 43,781.80
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Solution
The fourth proportional to 73,719.40, 110,579.10 and 43,781.80 is: 65,672.70
Step by Step Solution
- Step 1: Write the proportion equation
73,719.40 : 110,579.10 = 43,781.80 : x - Step 2: Convert to fraction form
73,719.40/110,579.10 = 43,781.80/x - Step 3: Cross multiply
73,719.40x = 110,579.10 × 43,781.80 - Step 4: Simplify right side
73,719.40x = 4,841,352,040.38 - Step 5: Solve for x
x = 4,841,352,040.38/73,719.40 - Step 6: Final answer
x = 65,672.70
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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.