Finding the Fourth Proportional to 86,411.29, 129,634.58 and 48,988.08
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Solution
The fourth proportional to 86,411.29, 129,634.58 and 48,988.08 is: 73,492.12
Step by Step Solution
- Step 1: Write the proportion equation
86,411.29 : 129,634.58 = 48,988.08 : x - Step 2: Convert to fraction form
86,411.29/129,634.58 = 48,988.08/x - Step 3: Cross multiply
86,411.29x = 129,634.58 × 48,988.08 - Step 4: Simplify right side
86,411.29x = 6,350,549,175.81 - Step 5: Solve for x
x = 6,350,549,175.81/86,411.29 - Step 6: Final answer
x = 73,492.12
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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.