Finding the Fourth Proportional to 101,008.41, 139,392.50 and 55,687.99
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Solution
The fourth proportional to 101,008.41, 139,392.50 and 55,687.99 is: 76,849.92
Step by Step Solution
- Step 1: Write the proportion equation
101,008.41 : 139,392.50 = 55,687.99 : x - Step 2: Convert to fraction form
101,008.41/139,392.50 = 55,687.99/x - Step 3: Cross multiply
101,008.41x = 139,392.50 × 55,687.99 - Step 4: Simplify right side
101,008.41x = 7,762,488,146.08 - Step 5: Solve for x
x = 7,762,488,146.08/101,008.41 - Step 6: Final answer
x = 76,849.92
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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.