Finding the Fourth Proportional to 101,279.13, 139,763.25 and 55,959.09
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Solution
The fourth proportional to 101,279.13, 139,763.25 and 55,959.09 is: 77,222.47
Step by Step Solution
- Step 1: Write the proportion equation
101,279.13 : 139,763.25 = 55,959.09 : x - Step 2: Convert to fraction form
101,279.13/139,763.25 = 55,959.09/x - Step 3: Cross multiply
101,279.13x = 139,763.25 × 55,959.09 - Step 4: Simplify right side
101,279.13x = 7,821,024,285.44 - Step 5: Solve for x
x = 7,821,024,285.44/101,279.13 - Step 6: Final answer
x = 77,222.47
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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.