Finding the Fourth Proportional to 116,987.40, 161,442.10 and 63,272.48
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Solution
The fourth proportional to 116,987.40, 161,442.10 and 63,272.48 is: 87,315.75
Step by Step Solution
- Step 1: Write the proportion equation
116,987.40 : 161,442.10 = 63,272.48 : x - Step 2: Convert to fraction form
116,987.40/161,442.10 = 63,272.48/x - Step 3: Cross multiply
116,987.40x = 161,442.10 × 63,272.48 - Step 4: Simplify right side
116,987.40x = 10,214,842,043.41 - Step 5: Solve for x
x = 10,214,842,043.41/116,987.40 - Step 6: Final answer
x = 87,315.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.