Finding the Fourth Proportional to 78,575.35, 117,864.14 and 22,415.47
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Solution
The fourth proportional to 78,575.35, 117,864.14 and 22,415.47 is: 33,623.52
Step by Step Solution
- Step 1: Write the proportion equation
78,575.35 : 117,864.14 = 22,415.47 : x - Step 2: Convert to fraction form
78,575.35/117,864.14 = 22,415.47/x - Step 3: Cross multiply
78,575.35x = 117,864.14 × 22,415.47 - Step 4: Simplify right side
78,575.35x = 2,641,980,094.25 - Step 5: Solve for x
x = 2,641,980,094.25/78,575.35 - Step 6: Final answer
x = 33,623.52
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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.