Finding the Fourth Proportional to 100,759.99, 139,048.77 and 55,436.98
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Solution
The fourth proportional to 100,759.99, 139,048.77 and 55,436.98 is: 76,503.02
Step by Step Solution
- Step 1: Write the proportion equation
100,759.99 : 139,048.77 = 55,436.98 : x - Step 2: Convert to fraction form
100,759.99/139,048.77 = 55,436.98/x - Step 3: Cross multiply
100,759.99x = 139,048.77 × 55,436.98 - Step 4: Simplify right side
100,759.99x = 7,708,443,881.51 - Step 5: Solve for x
x = 7,708,443,881.51/100,759.99 - Step 6: Final answer
x = 76,503.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.