Finding the Fourth Proportional to 83,643.21, 115,412.73 and 47,344.48
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Solution
The fourth proportional to 83,643.21, 115,412.73 and 47,344.48 is: 65,326.95
Step by Step Solution
- Step 1: Write the proportion equation
83,643.21 : 115,412.73 = 47,344.48 : x - Step 2: Convert to fraction form
83,643.21/115,412.73 = 47,344.48/x - Step 3: Cross multiply
83,643.21x = 115,412.73 × 47,344.48 - Step 4: Simplify right side
83,643.21x = 5,464,155,687.23 - Step 5: Solve for x
x = 5,464,155,687.23/83,643.21 - Step 6: Final answer
x = 65,326.95
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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.