Finding the Fourth Proportional to 101,352.40, 139,860.84 and 56,027.68
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Solution
The fourth proportional to 101,352.40, 139,860.84 and 56,027.68 is: 77,315.17
Step by Step Solution
- Step 1: Write the proportion equation
101,352.40 : 139,860.84 = 56,027.68 : x - Step 2: Convert to fraction form
101,352.40/139,860.84 = 56,027.68/x - Step 3: Cross multiply
101,352.40x = 139,860.84 × 56,027.68 - Step 4: Simplify right side
101,352.40x = 7,836,078,388.05 - Step 5: Solve for x
x = 7,836,078,388.05/101,352.40 - Step 6: Final answer
x = 77,315.17
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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.