Finding the Fourth Proportional to 86,155.76, 129,200.84 and 56,565.68
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Solution
The fourth proportional to 86,155.76, 129,200.84 and 56,565.68 is: 84,826.99
Step by Step Solution
- Step 1: Write the proportion equation
86,155.76 : 129,200.84 = 56,565.68 : x - Step 2: Convert to fraction form
86,155.76/129,200.84 = 56,565.68/x - Step 3: Cross multiply
86,155.76x = 129,200.84 × 56,565.68 - Step 4: Simplify right side
86,155.76x = 7,308,333,371.17 - Step 5: Solve for x
x = 7,308,333,371.17/86,155.76 - Step 6: Final answer
x = 84,826.99
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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.