Finding the Fourth Proportional to 85,881.05, 128,830.42 and 29,721.07
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Solution
The fourth proportional to 85,881.05, 128,830.42 and 29,721.07 is: 44,584.66
Step by Step Solution
- Step 1: Write the proportion equation
85,881.05 : 128,830.42 = 29,721.07 : x - Step 2: Convert to fraction form
85,881.05/128,830.42 = 29,721.07/x - Step 3: Cross multiply
85,881.05x = 128,830.42 × 29,721.07 - Step 4: Simplify right side
85,881.05x = 3,828,977,138.19 - Step 5: Solve for x
x = 3,828,977,138.19/85,881.05 - Step 6: Final answer
x = 44,584.66
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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.