Finding the Fourth Proportional to 83,239.61, 125,130.06 and 66,779.70
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Solution
The fourth proportional to 83,239.61, 125,130.06 and 66,779.70 is: 100,386.68
Step by Step Solution
- Step 1: Write the proportion equation
83,239.61 : 125,130.06 = 66,779.70 : x - Step 2: Convert to fraction form
83,239.61/125,130.06 = 66,779.70/x - Step 3: Cross multiply
83,239.61x = 125,130.06 × 66,779.70 - Step 4: Simplify right side
83,239.61x = 8,356,147,867.78 - Step 5: Solve for x
x = 8,356,147,867.78/83,239.61 - Step 6: Final answer
x = 100,386.68
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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.