Finding the Fourth Proportional to 83,779.47, 115,642.62 and 53,645.99
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Solution
The fourth proportional to 83,779.47, 115,642.62 and 53,645.99 is: 74,048.72
Step by Step Solution
- Step 1: Write the proportion equation
83,779.47 : 115,642.62 = 53,645.99 : x - Step 2: Convert to fraction form
83,779.47/115,642.62 = 53,645.99/x - Step 3: Cross multiply
83,779.47x = 115,642.62 × 53,645.99 - Step 4: Simplify right side
83,779.47x = 6,203,762,257.88 - Step 5: Solve for x
x = 6,203,762,257.88/83,779.47 - Step 6: Final answer
x = 74,048.72
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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.