Finding the Fourth Proportional to 86,744.06, 129,759.68 and 69,248.06
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Solution
The fourth proportional to 86,744.06, 129,759.68 and 69,248.06 is: 103,587.57
Step by Step Solution
- Step 1: Write the proportion equation
86,744.06 : 129,759.68 = 69,248.06 : x - Step 2: Convert to fraction form
86,744.06/129,759.68 = 69,248.06/x - Step 3: Cross multiply
86,744.06x = 129,759.68 × 69,248.06 - Step 4: Simplify right side
86,744.06x = 8,985,606,106.22 - Step 5: Solve for x
x = 8,985,606,106.22/86,744.06 - Step 6: Final answer
x = 103,587.57
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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.