Finding the Fourth Proportional to 84,109.36, 125,983.12 and 39,669.52
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Solution
The fourth proportional to 84,109.36, 125,983.12 and 39,669.52 is: 59,418.95
Step by Step Solution
- Step 1: Write the proportion equation
84,109.36 : 125,983.12 = 39,669.52 : x - Step 2: Convert to fraction form
84,109.36/125,983.12 = 39,669.52/x - Step 3: Cross multiply
84,109.36x = 125,983.12 × 39,669.52 - Step 4: Simplify right side
84,109.36x = 4,997,689,898.50 - Step 5: Solve for x
x = 4,997,689,898.50/84,109.36 - Step 6: Final answer
x = 59,418.95
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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.