Finding the Fourth Proportional to 86,058.69, 129,138.55 and 36,134.94
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Solution
The fourth proportional to 86,058.69, 129,138.55 and 36,134.94 is: 54,223.63
Step by Step Solution
- Step 1: Write the proportion equation
86,058.69 : 129,138.55 = 36,134.94 : x - Step 2: Convert to fraction form
86,058.69/129,138.55 = 36,134.94/x - Step 3: Cross multiply
86,058.69x = 129,138.55 × 36,134.94 - Step 4: Simplify right side
86,058.69x = 4,666,414,353.13 - Step 5: Solve for x
x = 4,666,414,353.13/86,058.69 - Step 6: Final answer
x = 54,223.63
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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.