Finding the Fourth Proportional to 81,461.13, 112,407.24 and 45,645.99
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Solution
The fourth proportional to 81,461.13, 112,407.24 and 45,645.99 is: 62,986.36
Step by Step Solution
- Step 1: Write the proportion equation
81,461.13 : 112,407.24 = 45,645.99 : x - Step 2: Convert to fraction form
81,461.13/112,407.24 = 45,645.99/x - Step 3: Cross multiply
81,461.13x = 112,407.24 × 45,645.99 - Step 4: Simplify right side
81,461.13x = 5,130,939,752.97 - Step 5: Solve for x
x = 5,130,939,752.97/81,461.13 - Step 6: Final answer
x = 62,986.36
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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.