Finding the Fourth Proportional to 86,207.20, 119,040.69 and 63,585.40
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Solution
The fourth proportional to 86,207.20, 119,040.69 and 63,585.40 is: 87,802.99
Step by Step Solution
- Step 1: Write the proportion equation
86,207.20 : 119,040.69 = 63,585.40 : x - Step 2: Convert to fraction form
86,207.20/119,040.69 = 63,585.40/x - Step 3: Cross multiply
86,207.20x = 119,040.69 × 63,585.40 - Step 4: Simplify right side
86,207.20x = 7,569,249,889.93 - Step 5: Solve for x
x = 7,569,249,889.93/86,207.20 - Step 6: Final answer
x = 87,802.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.