Finding the Fourth Proportional to 86,694.78, 130,079.73 and 30,574.99
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Solution
The fourth proportional to 86,694.78, 130,079.73 and 30,574.99 is: 45,875.73
Step by Step Solution
- Step 1: Write the proportion equation
86,694.78 : 130,079.73 = 30,574.99 : x - Step 2: Convert to fraction form
86,694.78/130,079.73 = 30,574.99/x - Step 3: Cross multiply
86,694.78x = 130,079.73 × 30,574.99 - Step 4: Simplify right side
86,694.78x = 3,977,186,443.95 - Step 5: Solve for x
x = 3,977,186,443.95/86,694.78 - Step 6: Final answer
x = 45,875.73
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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.