Finding the Fourth Proportional to 98,722.80, 136,237.08 and 53,400.84
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Solution
The fourth proportional to 98,722.80, 136,237.08 and 53,400.84 is: 73,692.95
Step by Step Solution
- Step 1: Write the proportion equation
98,722.80 : 136,237.08 = 53,400.84 : x - Step 2: Convert to fraction form
98,722.80/136,237.08 = 53,400.84/x - Step 3: Cross multiply
98,722.80x = 136,237.08 × 53,400.84 - Step 4: Simplify right side
98,722.80x = 7,275,174,511.15 - Step 5: Solve for x
x = 7,275,174,511.15/98,722.80 - Step 6: Final answer
x = 73,692.95
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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.