Finding the Fourth Proportional to 78,929.80, 118,390.84 and 29,006.06
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Solution
The fourth proportional to 78,929.80, 118,390.84 and 29,006.06 is: 43,507.66
Step by Step Solution
- Step 1: Write the proportion equation
78,929.80 : 118,390.84 = 29,006.06 : x - Step 2: Convert to fraction form
78,929.80/118,390.84 = 29,006.06/x - Step 3: Cross multiply
78,929.80x = 118,390.84 × 29,006.06 - Step 4: Simplify right side
78,929.80x = 3,434,051,144.02 - Step 5: Solve for x
x = 3,434,051,144.02/78,929.80 - Step 6: Final answer
x = 43,507.66
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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.