Finding the Fourth Proportional to 104,692.80, 144,478.44 and 56,948.70
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Solution
The fourth proportional to 104,692.80, 144,478.44 and 56,948.70 is: 78,590.50
Step by Step Solution
- Step 1: Write the proportion equation
104,692.80 : 144,478.44 = 56,948.70 : x - Step 2: Convert to fraction form
104,692.80/144,478.44 = 56,948.70/x - Step 3: Cross multiply
104,692.80x = 144,478.44 × 56,948.70 - Step 4: Simplify right side
104,692.80x = 8,227,859,336.03 - Step 5: Solve for x
x = 8,227,859,336.03/104,692.80 - Step 6: Final answer
x = 78,590.50
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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.