Finding the Fourth Proportional to 139,649.13, 209,483.42 and 46,220.49
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Solution
The fourth proportional to 139,649.13, 209,483.42 and 46,220.49 is: 69,333.95
Step by Step Solution
- Step 1: Write the proportion equation
139,649.13 : 209,483.42 = 46,220.49 : x - Step 2: Convert to fraction form
139,649.13/209,483.42 = 46,220.49/x - Step 3: Cross multiply
139,649.13x = 209,483.42 × 46,220.49 - Step 4: Simplify right side
139,649.13x = 9,682,426,088.17 - Step 5: Solve for x
x = 9,682,426,088.17/139,649.13 - Step 6: Final answer
x = 69,333.95
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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.