Finding the Fourth Proportional to 86,443.08, 129,430.80 and 44,802.60
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Solution
The fourth proportional to 86,443.08, 129,430.80 and 44,802.60 is: 67,082.71
Step by Step Solution
- Step 1: Write the proportion equation
86,443.08 : 129,430.80 = 44,802.60 : x - Step 2: Convert to fraction form
86,443.08/129,430.80 = 44,802.60/x - Step 3: Cross multiply
86,443.08x = 129,430.80 × 44,802.60 - Step 4: Simplify right side
86,443.08x = 5,798,836,360.08 - Step 5: Solve for x
x = 5,798,836,360.08/86,443.08 - Step 6: Final answer
x = 67,082.71
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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.