Finding the Fourth Proportional to 78,752.99, 108,676.73 and 42,943.70
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Solution
The fourth proportional to 78,752.99, 108,676.73 and 42,943.70 is: 59,260.99
Step by Step Solution
- Step 1: Write the proportion equation
78,752.99 : 108,676.73 = 42,943.70 : x - Step 2: Convert to fraction form
78,752.99/108,676.73 = 42,943.70/x - Step 3: Cross multiply
78,752.99x = 108,676.73 × 42,943.70 - Step 4: Simplify right side
78,752.99x = 4,666,980,132.00 - Step 5: Solve for x
x = 4,666,980,132.00/78,752.99 - Step 6: Final answer
x = 59,260.99
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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.