Finding the Fourth Proportional to 86,303.19, 129,394.62 and 38,245.63
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Solution
The fourth proportional to 86,303.19, 129,394.62 and 38,245.63 is: 57,341.78
Step by Step Solution
- Step 1: Write the proportion equation
86,303.19 : 129,394.62 = 38,245.63 : x - Step 2: Convert to fraction form
86,303.19/129,394.62 = 38,245.63/x - Step 3: Cross multiply
86,303.19x = 129,394.62 × 38,245.63 - Step 4: Simplify right side
86,303.19x = 4,948,778,437.02 - Step 5: Solve for x
x = 4,948,778,437.02/86,303.19 - Step 6: Final answer
x = 57,341.78
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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.