Finding the Fourth Proportional to 86,497.80, 129,746.70 and 23,317.80
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Solution
The fourth proportional to 86,497.80, 129,746.70 and 23,317.80 is: 34,976.70
Step by Step Solution
- Step 1: Write the proportion equation
86,497.80 : 129,746.70 = 23,317.80 : x - Step 2: Convert to fraction form
86,497.80/129,746.70 = 23,317.80/x - Step 3: Cross multiply
86,497.80x = 129,746.70 × 23,317.80 - Step 4: Simplify right side
86,497.80x = 3,025,407,601.26 - Step 5: Solve for x
x = 3,025,407,601.26/86,497.80 - Step 6: Final answer
x = 34,976.70
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1.5x scale
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.