Finding the Fourth Proportional to 78,921.54, 118,388.45 and 26,330.99
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Solution
The fourth proportional to 78,921.54, 118,388.45 and 26,330.99 is: 39,498.53
Step by Step Solution
- Step 1: Write the proportion equation
78,921.54 : 118,388.45 = 26,330.99 : x - Step 2: Convert to fraction form
78,921.54/118,388.45 = 26,330.99/x - Step 3: Cross multiply
78,921.54x = 118,388.45 × 26,330.99 - Step 4: Simplify right side
78,921.54x = 3,117,284,566.95 - Step 5: Solve for x
x = 3,117,284,566.95/78,921.54 - Step 6: Final answer
x = 39,498.53
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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.