Finding the Fourth Proportional to 78,567.13, 117,851.28 and 22,407.18
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Solution
The fourth proportional to 78,567.13, 117,851.28 and 22,407.18 is: 33,610.94
Step by Step Solution
- Step 1: Write the proportion equation
78,567.13 : 117,851.28 = 22,407.18 : x - Step 2: Convert to fraction form
78,567.13/117,851.28 = 22,407.18/x - Step 3: Cross multiply
78,567.13x = 117,851.28 × 22,407.18 - Step 4: Simplify right side
78,567.13x = 2,640,714,844.19 - Step 5: Solve for x
x = 2,640,714,844.19/78,567.13 - Step 6: Final answer
x = 33,610.94
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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.