Finding the Fourth Proportional to 88,272.31, 121,814.35 and 47,987.09
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Solution
The fourth proportional to 88,272.31, 121,814.35 and 47,987.09 is: 66,221.40
Step by Step Solution
- Step 1: Write the proportion equation
88,272.31 : 121,814.35 = 47,987.09 : x - Step 2: Convert to fraction form
88,272.31/121,814.35 = 47,987.09/x - Step 3: Cross multiply
88,272.31x = 121,814.35 × 47,987.09 - Step 4: Simplify right side
88,272.31x = 5,845,515,696.87 - Step 5: Solve for x
x = 5,845,515,696.87/88,272.31 - Step 6: Final answer
x = 66,221.40
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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.