Finding the Fourth Proportional to 75,969.74, 113,954.69 and 19,809.80
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Solution
The fourth proportional to 75,969.74, 113,954.69 and 19,809.80 is: 29,714.71
Step by Step Solution
- Step 1: Write the proportion equation
75,969.74 : 113,954.69 = 19,809.80 : x - Step 2: Convert to fraction form
75,969.74/113,954.69 = 19,809.80/x - Step 3: Cross multiply
75,969.74x = 113,954.69 × 19,809.80 - Step 4: Simplify right side
75,969.74x = 2,257,418,949.14 - Step 5: Solve for x
x = 2,257,418,949.14/75,969.74 - Step 6: Final answer
x = 29,714.71
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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.