Finding the Fourth Proportional to 83,026.20, 124,539.30 and 76,027.80
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Solution
The fourth proportional to 83,026.20, 124,539.30 and 76,027.80 is: 114,041.70
Step by Step Solution
- Step 1: Write the proportion equation
83,026.20 : 124,539.30 = 76,027.80 : x - Step 2: Convert to fraction form
83,026.20/124,539.30 = 76,027.80/x - Step 3: Cross multiply
83,026.20x = 124,539.30 × 76,027.80 - Step 4: Simplify right side
83,026.20x = 9,468,448,992.54 - Step 5: Solve for x
x = 9,468,448,992.54/83,026.20 - Step 6: Final answer
x = 114,041.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.